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	<title>Claudiu Mindrila</title>
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	<description>Matematica si nu numai</description>
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		<title>Claudiu Mindrila</title>
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		<item>
		<title>Functie cu domeniul de definitie si codomeniul Q</title>
		<link>http://claudiumnd.wordpress.com/2011/03/18/functie-cu-domeniul-de-definitie-si-codomeniul-q/</link>
		<comments>http://claudiumnd.wordpress.com/2011/03/18/functie-cu-domeniul-de-definitie-si-codomeniul-q/#comments</comments>
		<pubDate>Fri, 18 Mar 2011 10:33:57 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
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		<description><![CDATA[Determinati functiile care verifica relatia   Claudiu Mindrila, RMT 2/2011<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=190&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Determinati functiile <img src='http://s0.wp.com/latex.php?latex=f%3A%5Cmathbb%7BQ%7D%5Clongrightarrow%5Cmathbb%7BQ%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='f:&#92;mathbb{Q}&#92;longrightarrow&#92;mathbb{Q} ' title='f:&#92;mathbb{Q}&#92;longrightarrow&#92;mathbb{Q} ' class='latex' /> care verifica relatia  <img src='http://s0.wp.com/latex.php?latex=2f%5Cleft%28f%5Cleft%28x%5Cright%29%2Bf%5Cleft%28y%5Cright%29%5Cright%29%3Df%5Cleft%28f%5Cleft%28x%2By%5Cright%29%5Cright%29%2Bx%2By%2C%5Cforall+x%2C%5C+y%5Cin%5Cmathbb%7BQ%7D&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='2f&#92;left(f&#92;left(x&#92;right)+f&#92;left(y&#92;right)&#92;right)=f&#92;left(f&#92;left(x+y&#92;right)&#92;right)+x+y,&#92;forall x,&#92; y&#92;in&#92;mathbb{Q}' title='2f&#92;left(f&#92;left(x&#92;right)+f&#92;left(y&#92;right)&#92;right)=f&#92;left(f&#92;left(x+y&#92;right)&#92;right)+x+y,&#92;forall x,&#92; y&#92;in&#92;mathbb{Q}' class='latex' /></p>
<p><em>Claudiu Mindrila, RMT 2/2011</em></p>
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			<media:title type="html">mndc</media:title>
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		<item>
		<title>Punctul lui Brocard si o relatie vectoriala</title>
		<link>http://claudiumnd.wordpress.com/2011/03/10/punctul-lui-brocard-si-o-relatie-vectoriala/</link>
		<comments>http://claudiumnd.wordpress.com/2011/03/10/punctul-lui-brocard-si-o-relatie-vectoriala/#comments</comments>
		<pubDate>Thu, 10 Mar 2011 18:41:15 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

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		<description><![CDATA[Fie un punct in interiorul triunghiului astfel incat . Daca , aratati ca este echilateral. Claudiu Mindrila, Recreatii Matematice nr. 1/2011<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=182&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Fie <img src='http://s0.wp.com/latex.php?latex=P+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='P ' title='P ' class='latex' /> un punct in interiorul triunghiului <img src='http://s0.wp.com/latex.php?latex=ABC+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='ABC ' title='ABC ' class='latex' /> astfel incat <img src='http://s0.wp.com/latex.php?latex=%5Cwidehat%7BPAB%7D%5Cequiv%5Cwidehat%7BPBC%7D%5Cequiv%5Cwidehat%7BPCA%7D&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;widehat{PAB}&#92;equiv&#92;widehat{PBC}&#92;equiv&#92;widehat{PCA}' title='&#92;widehat{PAB}&#92;equiv&#92;widehat{PBC}&#92;equiv&#92;widehat{PCA}' class='latex' />. Daca <img src='http://s0.wp.com/latex.php?latex=AB%5Ccdot%5Coverrightarrow%7BAP%7D%2BBC%5Ccdot%5Coverrightarrow%7BBP%7D%2BCA%5Ccdot%5Coverrightarrow%7BCP%7D%3D%5Coverrightarrow%7B0%7D&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='AB&#92;cdot&#92;overrightarrow{AP}+BC&#92;cdot&#92;overrightarrow{BP}+CA&#92;cdot&#92;overrightarrow{CP}=&#92;overrightarrow{0}' title='AB&#92;cdot&#92;overrightarrow{AP}+BC&#92;cdot&#92;overrightarrow{BP}+CA&#92;cdot&#92;overrightarrow{CP}=&#92;overrightarrow{0}' class='latex' />, aratati ca <img src='http://s0.wp.com/latex.php?latex=%5Ctriangle%7BABC%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;triangle{ABC} ' title='&#92;triangle{ABC} ' class='latex' /> este echilateral.</p>
<p><em>Claudiu Mindrila, Recreatii Matematice nr. 1/2011</em></p>
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			<media:title type="html">mndc</media:title>
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	</item>
		<item>
		<title>Puncte pe inaltimile unui triunghi</title>
		<link>http://claudiumnd.wordpress.com/2011/02/13/puncte-pe-inaltimile-unui-triunghi/</link>
		<comments>http://claudiumnd.wordpress.com/2011/02/13/puncte-pe-inaltimile-unui-triunghi/#comments</comments>
		<pubDate>Sun, 13 Feb 2011 16:11:46 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://claudiumnd.wordpress.com/?p=171</guid>
		<description><![CDATA[Fie punctele pe inaltimile corespunzatoare laturilor respectiv ale unui triunghi . Daca reprezinta lungimile inaltimilor , stiind ca si ca triunghiurile si   au acelasi centru de greutate, sa se demonstreze ca este echilateral. Claudiu Mindrila, Revista de Matematica din Constanta, nr. 1/2011<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=171&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Fie punctele <img src='http://s0.wp.com/latex.php?latex=D%2C%5C+E%2C%5C+F+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='D,&#92; E,&#92; F ' title='D,&#92; E,&#92; F ' class='latex' /> pe inaltimile corespunzatoare laturilor <img src='http://s0.wp.com/latex.php?latex=BC%2C%5C+CA&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='BC,&#92; CA' title='BC,&#92; CA' class='latex' /> respectiv <img src='http://s0.wp.com/latex.php?latex=AB+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='AB ' title='AB ' class='latex' /> ale unui triunghi <img src='http://s0.wp.com/latex.php?latex=ABC+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='ABC ' title='ABC ' class='latex' />. Daca <img src='http://s0.wp.com/latex.php?latex=h_%7Ba%7D%2C%5C+h_%7Bb%7D%2C%5C+h_%7Bc%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='h_{a},&#92; h_{b},&#92; h_{c} ' title='h_{a},&#92; h_{b},&#92; h_{c} ' class='latex' /> reprezinta lungimile inaltimilor <img src='http://s0.wp.com/latex.php?latex=%5Ctriangle%7BABC%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;triangle{ABC} ' title='&#92;triangle{ABC} ' class='latex' />, stiind ca <img src='http://s0.wp.com/latex.php?latex=AD%3Da%2Bh_%7Ba%7D%2C%5C+BE%3Db%2Bh_%7Bb%7D%2C%5C+CF%3Dc%2Bh_%7Bc%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='AD=a+h_{a},&#92; BE=b+h_{b},&#92; CF=c+h_{c} ' title='AD=a+h_{a},&#92; BE=b+h_{b},&#92; CF=c+h_{c} ' class='latex' /> si ca triunghiurile <img src='http://s0.wp.com/latex.php?latex=ABC+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='ABC ' title='ABC ' class='latex' /> si  <img src='http://s0.wp.com/latex.php?latex=DEF+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='DEF ' title='DEF ' class='latex' /> au acelasi centru de greutate, sa se demonstreze ca <img src='http://s0.wp.com/latex.php?latex=%5Ctriangle%7BABC%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;triangle{ABC} ' title='&#92;triangle{ABC} ' class='latex' /> este echilateral.<br />
<em>Claudiu Mindrila, Revista de Matematica din Constanta, nr. 1/2011</em></p>
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			<media:title type="html">mndc</media:title>
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	</item>
		<item>
		<title>Inegalitate cu laturile unui triunghi</title>
		<link>http://claudiumnd.wordpress.com/2010/12/05/inegalitate-cu-laturile-unui-triunghi/</link>
		<comments>http://claudiumnd.wordpress.com/2010/12/05/inegalitate-cu-laturile-unui-triunghi/#comments</comments>
		<pubDate>Sun, 05 Dec 2010 17:55:36 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://claudiumnd.wordpress.com/?p=145</guid>
		<description><![CDATA[Fie lungimile laturilor unui triunghi si fie un numar real pozitiv. Sa se demonstreze ca: Claudiu Mindrila, Gazeta Matematica nr. 11/2010<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=145&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Fie <img src='http://s0.wp.com/latex.php?latex=a%2C%5C+b%2C+%5C+c&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='a,&#92; b, &#92; c' title='a,&#92; b, &#92; c' class='latex' /> lungimile laturilor unui triunghi si fie <img src='http://s0.wp.com/latex.php?latex=k+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='k ' title='k ' class='latex' /> un numar real pozitiv. Sa se demonstreze ca: <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cfrac%7Ba%5E%7Bk%7D%7D%7B%5Cleft%28b%2Bc%5Cright%29%5E%7B2%7D%7D%2B%5Cfrac%7Bb%5E%7Bk%7D%7D%7B%5Cleft%28c%2Ba%5Cright%29%5E%7B2%7D%7D%2B%5Cfrac%7Bc%5E%7Bk%7D%7D%7B%5Cleft%28a%2Bb%5Cright%29%5E%7B2%7D%7D%5Cge%5Cfrac%7B1%7D%7B2%7D%5Cleft%28%5Cfrac%7Ba%5E%7Bk%7D%7D%7Ba%5E%7B2%7D%2Bbc%7D%2B%5Cfrac%7Bb%5E%7Bk%7D%7D%7Bb%5E%7B2%7D%2Bca%7D%2B%5Cfrac%7Bc%5E%7Bk%7D%7D%7Bc%5E%7B2%7D%2Bab%7D%5Cright%29&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle &#92;frac{a^{k}}{&#92;left(b+c&#92;right)^{2}}+&#92;frac{b^{k}}{&#92;left(c+a&#92;right)^{2}}+&#92;frac{c^{k}}{&#92;left(a+b&#92;right)^{2}}&#92;ge&#92;frac{1}{2}&#92;left(&#92;frac{a^{k}}{a^{2}+bc}+&#92;frac{b^{k}}{b^{2}+ca}+&#92;frac{c^{k}}{c^{2}+ab}&#92;right)' title='&#92;displaystyle &#92;frac{a^{k}}{&#92;left(b+c&#92;right)^{2}}+&#92;frac{b^{k}}{&#92;left(c+a&#92;right)^{2}}+&#92;frac{c^{k}}{&#92;left(a+b&#92;right)^{2}}&#92;ge&#92;frac{1}{2}&#92;left(&#92;frac{a^{k}}{a^{2}+bc}+&#92;frac{b^{k}}{b^{2}+ca}+&#92;frac{c^{k}}{c^{2}+ab}&#92;right)' class='latex' /></p>
<p><em>Claudiu Mindrila, Gazeta Matematica nr. 11/2010</em></p>
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			<media:title type="html">mndc</media:title>
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	</item>
		<item>
		<title>Triunghi echilateral caracterizat de o relatie vectoriala</title>
		<link>http://claudiumnd.wordpress.com/2010/12/05/triunghi-echilateral-caracterizat-de-o-relatie-vectoriala/</link>
		<comments>http://claudiumnd.wordpress.com/2010/12/05/triunghi-echilateral-caracterizat-de-o-relatie-vectoriala/#comments</comments>
		<pubDate>Sun, 05 Dec 2010 17:40:09 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://claudiumnd.wordpress.com/?p=141</guid>
		<description><![CDATA[Fie punctele pe laturile  ale triunghiului astfel incat . Notam cu centrul de greutate al triunghiului . Stiind ca , sa se arate ca triunghul este echilateral. Claudiu Mindrila, Gazeta Matematica 11/2010<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=141&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Fie punctele <img src='http://s0.wp.com/latex.php?latex=M%2C%5C+N%2C%5C+P&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='M,&#92; N,&#92; P' title='M,&#92; N,&#92; P' class='latex' /> pe laturile <img src='http://s0.wp.com/latex.php?latex=AB%2C%5C+BC%2C%5C+CA&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='AB,&#92; BC,&#92; CA' title='AB,&#92; BC,&#92; CA' class='latex' />  ale triunghiului <img src='http://s0.wp.com/latex.php?latex=ABC&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='ABC' title='ABC' class='latex' /> astfel incat <img src='http://s0.wp.com/latex.php?latex=AM%3DBN%3DCP&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='AM=BN=CP' title='AM=BN=CP' class='latex' />. Notam cu <img src='http://s0.wp.com/latex.php?latex=T&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='T' title='T' class='latex' /> centrul de greutate al triunghiului <img src='http://s0.wp.com/latex.php?latex=MNP&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='MNP' title='MNP' class='latex' />. Stiind ca <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+AB%5Ccdot%5Coverrightarrow%7BAT%7D%2BBC%5Ccdot%5Coverrightarrow%7BBT%7D%2BCA%5Ccdot%5Coverrightarrow%7BCT%7D%3D%5Coverrightarrow%7B0%7D&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle AB&#92;cdot&#92;overrightarrow{AT}+BC&#92;cdot&#92;overrightarrow{BT}+CA&#92;cdot&#92;overrightarrow{CT}=&#92;overrightarrow{0}' title='&#92;displaystyle AB&#92;cdot&#92;overrightarrow{AT}+BC&#92;cdot&#92;overrightarrow{BT}+CA&#92;cdot&#92;overrightarrow{CT}=&#92;overrightarrow{0}' class='latex' />, sa se arate ca triunghul <img src='http://s0.wp.com/latex.php?latex=ABC&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='ABC' title='ABC' class='latex' /> este echilateral.</p>
<p><em>Claudiu Mindrila, Gazeta Matematica 11/2010</em></p>
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			<media:title type="html">mndc</media:title>
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		<item>
		<title>Inegalitate</title>
		<link>http://claudiumnd.wordpress.com/2010/11/21/inegalitate/</link>
		<comments>http://claudiumnd.wordpress.com/2010/11/21/inegalitate/#comments</comments>
		<pubDate>Sun, 21 Nov 2010 19:35:35 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://claudiumnd.wordpress.com/?p=130</guid>
		<description><![CDATA[Fie .  Aratati ca Claudiu Mindrila, Revista de Matematica din Timisoara nr. 4/2010<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=130&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Fie <img src='http://s0.wp.com/latex.php?latex=a%2C%5C+b%2C%5C+c+%3E0&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='a,&#92; b,&#92; c &gt;0' title='a,&#92; b,&#92; c &gt;0' class='latex' />.  Aratati ca</p>
<p><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cfrac%7B3%5Cleft%28ab%2Bbc%2Bca%5Cright%29%7D%7B%5Cleft%28a%2Bb%2Bc%5Cright%29%5E%7B2%7D%7D%2Ba%2Bb%2Bc%5Cge4%5Csqrt%5B4%5D%7Babc%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle &#92;frac{3&#92;left(ab+bc+ca&#92;right)}{&#92;left(a+b+c&#92;right)^{2}}+a+b+c&#92;ge4&#92;sqrt[4]{abc} ' title='&#92;displaystyle &#92;frac{3&#92;left(ab+bc+ca&#92;right)}{&#92;left(a+b+c&#92;right)^{2}}+a+b+c&#92;ge4&#92;sqrt[4]{abc} ' class='latex' /></p>
<p><em>Claudiu Mindrila, Revista de Matematica din Timisoara nr. 4/2010</em></p>
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			<media:title type="html">mndc</media:title>
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	</item>
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		<title>O inegalitate simpluta</title>
		<link>http://claudiumnd.wordpress.com/2010/09/19/o-inegalitate-simpluta/</link>
		<comments>http://claudiumnd.wordpress.com/2010/09/19/o-inegalitate-simpluta/#comments</comments>
		<pubDate>Sun, 19 Sep 2010 17:13:34 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://claudiumnd.wordpress.com/?p=106</guid>
		<description><![CDATA[Fie . Aratati ca: . Claudiu Mindrila, Revista de Matematica din Timisoara nr. 3/2010<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=106&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Fie <img src='http://s0.wp.com/latex.php?latex=a%2C%5C+b%2C%5C+c%3E0&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='a,&#92; b,&#92; c&gt;0' title='a,&#92; b,&#92; c&gt;0' class='latex' />. Aratati ca: <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+1%2B%5Cfrac%7B1%7D%7B6abc%7D%3E%5Cfrac%7B3%7D%7Ba%2Bb%2Bc%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle 1+&#92;frac{1}{6abc}&gt;&#92;frac{3}{a+b+c} ' title='&#92;displaystyle 1+&#92;frac{1}{6abc}&gt;&#92;frac{3}{a+b+c} ' class='latex' />.</p>
<p><em>Claudiu Mindrila, Revista de Matematica din Timisoara nr. 3/2010</em></p>
<br />  <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/claudiumnd.wordpress.com/106/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/claudiumnd.wordpress.com/106/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godelicious/claudiumnd.wordpress.com/106/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/delicious/claudiumnd.wordpress.com/106/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gofacebook/claudiumnd.wordpress.com/106/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/facebook/claudiumnd.wordpress.com/106/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gotwitter/claudiumnd.wordpress.com/106/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/twitter/claudiumnd.wordpress.com/106/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gostumble/claudiumnd.wordpress.com/106/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/stumble/claudiumnd.wordpress.com/106/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/godigg/claudiumnd.wordpress.com/106/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/digg/claudiumnd.wordpress.com/106/" /></a> <a rel="nofollow" href="http://feeds.wordpress.com/1.0/goreddit/claudiumnd.wordpress.com/106/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/reddit/claudiumnd.wordpress.com/106/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=106&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></content:encoded>
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			<media:title type="html">mndc</media:title>
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	</item>
		<item>
		<title>My new inequality</title>
		<link>http://claudiumnd.wordpress.com/2010/07/08/my-new-inequality/</link>
		<comments>http://claudiumnd.wordpress.com/2010/07/08/my-new-inequality/#comments</comments>
		<pubDate>Thu, 08 Jul 2010 21:06:58 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://claudiumnd.wordpress.com/?p=96</guid>
		<description><![CDATA[Problema. Fie si Aratati ca: Claudiu Mindrila, Gazeta Matematica nr. 6/2010<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=96&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><strong>Problema. </strong>Fie <img src='http://s0.wp.com/latex.php?latex=m%2C%5C+n%5Cin%5Cmathbb%7BN%7D%5E%7B%2A%7D%2C%5C+m%5Cle2n+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='m,&#92; n&#92;in&#92;mathbb{N}^{*},&#92; m&#92;le2n ' title='m,&#92; n&#92;in&#92;mathbb{N}^{*},&#92; m&#92;le2n ' class='latex' /> si <img src='http://s0.wp.com/latex.php?latex=a%2C%5C+b%2C%5C+c%3E0+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='a,&#92; b,&#92; c&gt;0 ' title='a,&#92; b,&#92; c&gt;0 ' class='latex' /> Aratati ca: <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cfrac%7Ba%5E%7Bm%7D%7D%7Bb%5E%7Bn%7D%2Bc%5E%7Bn%7D%7D%2B%5Cfrac%7Bb%5E%7Bm%7D%7D%7Bc%5E%7Bn%7D%2Ba%5E%7Bn%7D%7D%2B%5Cfrac%7Bc%5E%7Bm%7D%7D%7Ba%5E%7Bn%7D%2Bb%5E%7Bn%7D%7D%5Cge%5Cfrac%7B3%7D%7B2%7D%5Csqrt%7B%5Cfrac%7Ba%5E%7Bm%7D%2Bb%5E%7Bm%7D%2Bc%5E%7Bm%7D%7D%7Ba%5E%7B2n-m%7D%2Bb%5E%7B2n-m%7D%2Bc%5E%7B2n-m%7D%7D%7D.&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle &#92;frac{a^{m}}{b^{n}+c^{n}}+&#92;frac{b^{m}}{c^{n}+a^{n}}+&#92;frac{c^{m}}{a^{n}+b^{n}}&#92;ge&#92;frac{3}{2}&#92;sqrt{&#92;frac{a^{m}+b^{m}+c^{m}}{a^{2n-m}+b^{2n-m}+c^{2n-m}}}.' title='&#92;displaystyle &#92;frac{a^{m}}{b^{n}+c^{n}}+&#92;frac{b^{m}}{c^{n}+a^{n}}+&#92;frac{c^{m}}{a^{n}+b^{n}}&#92;ge&#92;frac{3}{2}&#92;sqrt{&#92;frac{a^{m}+b^{m}+c^{m}}{a^{2n-m}+b^{2n-m}+c^{2n-m}}}.' class='latex' /></p>
<p><em>Claudiu Mindrila, Gazeta Matematica nr. 6/2010</em></p>
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			<media:title type="html">mndc</media:title>
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		<title>O inegalitate mai veche</title>
		<link>http://claudiumnd.wordpress.com/2010/05/02/o-inegalitate-mai-veche/</link>
		<comments>http://claudiumnd.wordpress.com/2010/05/02/o-inegalitate-mai-veche/#comments</comments>
		<pubDate>Sun, 02 May 2010 12:54:31 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

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		<description><![CDATA[In timp ce cautam o problema in Gazeta Matematica, intamplator am dat si peste urmatoarea inegalitate: Daca atunci are loc inegalitatea: Florin Vulpescu- Jalea<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=82&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>In timp ce cautam o problema in Gazeta Matematica, intamplator am dat si peste urmatoarea inegalitate:</p>
<p>Daca <img src='http://s0.wp.com/latex.php?latex=a_%7Bi%7D%2C%5C+b_%7Bi%7D%5Cin%5Cmathbb%7BR%7D_%7B%2B%7D%2C%5C+i%3D1%2C%5C+2%2C%5Cldots%2C%5C+n+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='a_{i},&#92; b_{i}&#92;in&#92;mathbb{R}_{+},&#92; i=1,&#92; 2,&#92;ldots,&#92; n ' title='a_{i},&#92; b_{i}&#92;in&#92;mathbb{R}_{+},&#92; i=1,&#92; 2,&#92;ldots,&#92; n ' class='latex' /> atunci are loc inegalitatea:</p>
<p><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cprod_%7Bi%3D1%7D%5E%7Bn%7D%5Cleft%28a_%7Bi%7D%2Bb_%7Bi%7D%5Cright%29%5Cge2%5E%7Bn%7D%5Cprod_%7Bi%3D1%7D%5E%7Bn%7D%5Csqrt%7Ba_%7Bi%7Db_%7Bi%7D%7D%2B%5Cleft%28%5Cprod_%7Bi%3D1%7D%5E%7Bn%7D%5Csqrt%7Ba_%7Bi%7D%7D-%5Cprod_%7Bi%3D1%7D%5E%7Bn%7D%5Csqrt%7Bb_%7Bi%7D%7D%5Cright%29%5E%7B2%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle &#92;prod_{i=1}^{n}&#92;left(a_{i}+b_{i}&#92;right)&#92;ge2^{n}&#92;prod_{i=1}^{n}&#92;sqrt{a_{i}b_{i}}+&#92;left(&#92;prod_{i=1}^{n}&#92;sqrt{a_{i}}-&#92;prod_{i=1}^{n}&#92;sqrt{b_{i}}&#92;right)^{2} ' title='&#92;displaystyle &#92;prod_{i=1}^{n}&#92;left(a_{i}+b_{i}&#92;right)&#92;ge2^{n}&#92;prod_{i=1}^{n}&#92;sqrt{a_{i}b_{i}}+&#92;left(&#92;prod_{i=1}^{n}&#92;sqrt{a_{i}}-&#92;prod_{i=1}^{n}&#92;sqrt{b_{i}}&#92;right)^{2} ' class='latex' /></p>
<p><em>Florin Vulpescu- Jalea</em></p>
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		<title>Inegalitati usurele-1</title>
		<link>http://claudiumnd.wordpress.com/2010/02/05/inegalitati-usurele-1/</link>
		<comments>http://claudiumnd.wordpress.com/2010/02/05/inegalitati-usurele-1/#comments</comments>
		<pubDate>Fri, 05 Feb 2010 18:13:56 +0000</pubDate>
		<dc:creator>Claudiu Mîndrilă</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

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		<description><![CDATA[1. Andrei Baleanu 2.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=claudiumnd.wordpress.com&amp;blog=5964379&amp;post=76&amp;subd=claudiumnd&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>1.</p>
<p><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+a_%7B1%7D%2C%5C+a_%7B2%7D%2C%5Cldots%2C%5C+a_%7Bn%7D%3E1%2C%5C+%5Csum_%7Bi%3D1%7D%5E%7Bn%7D%5Cfrac%7B1%7D%7Ba_%7Bi%7D%5E%7B2%7D-1%7D%3D1%5CLongrightarrow%5Csum_%7Bi%3D1%7D%5E%7Bn%7D%5Cfrac%7B1%7D%7B1%2Ba_%7Bi%7D%7D%5Cle%5Cfrac%7Bn%7D%7B1%2B%5Csqrt%7Bn%2B1%7D%7D+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle a_{1},&#92; a_{2},&#92;ldots,&#92; a_{n}&gt;1,&#92; &#92;sum_{i=1}^{n}&#92;frac{1}{a_{i}^{2}-1}=1&#92;Longrightarrow&#92;sum_{i=1}^{n}&#92;frac{1}{1+a_{i}}&#92;le&#92;frac{n}{1+&#92;sqrt{n+1}} ' title='&#92;displaystyle a_{1},&#92; a_{2},&#92;ldots,&#92; a_{n}&gt;1,&#92; &#92;sum_{i=1}^{n}&#92;frac{1}{a_{i}^{2}-1}=1&#92;Longrightarrow&#92;sum_{i=1}^{n}&#92;frac{1}{1+a_{i}}&#92;le&#92;frac{n}{1+&#92;sqrt{n+1}} ' class='latex' /></p>
<p><em>Andrei Baleanu</em></p>
<p>2.</p>
<p><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%2C%5C+y%2C%5C+z%3E0%5CLongrightarrow%5Cfrac%7Bx%5Cleft%28y%2Bz%5Cright%29%7D%7Bx%2Byz%7D%2B%5Cfrac%7By%5Cleft%28z%2Bx%5Cright%29%7D%7By%2Bzx%7D%2B%5Cfrac%7Bz%5Cleft%28x%2By%5Cright%29%7D%7Bz%2Bxy%7D%5Cle2%5Cleft%28%5Cfrac%7Bx%5E%7B2%7D%7D%7Bx%2Byz%7D%2B%5Cfrac%7By%5E%7B2%7D%7D%7By%2Bzx%7D%2B%5Cfrac%7Bz%5E%7B2%7D%7D%7Bz%2Bxy%7D%5Cright%29+&amp;bg=ffffff&amp;fg=555555&amp;s=0' alt='&#92;displaystyle x,&#92; y,&#92; z&gt;0&#92;Longrightarrow&#92;frac{x&#92;left(y+z&#92;right)}{x+yz}+&#92;frac{y&#92;left(z+x&#92;right)}{y+zx}+&#92;frac{z&#92;left(x+y&#92;right)}{z+xy}&#92;le2&#92;left(&#92;frac{x^{2}}{x+yz}+&#92;frac{y^{2}}{y+zx}+&#92;frac{z^{2}}{z+xy}&#92;right) ' title='&#92;displaystyle x,&#92; y,&#92; z&gt;0&#92;Longrightarrow&#92;frac{x&#92;left(y+z&#92;right)}{x+yz}+&#92;frac{y&#92;left(z+x&#92;right)}{y+zx}+&#92;frac{z&#92;left(x+y&#92;right)}{z+xy}&#92;le2&#92;left(&#92;frac{x^{2}}{x+yz}+&#92;frac{y^{2}}{y+zx}+&#92;frac{z^{2}}{z+xy}&#92;right) ' class='latex' /></p>
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