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Revision as of 22:03, 23 October 2008 edit74.183.242.181 (talk) →9: new section← Previous edit Revision as of 22:04, 23 October 2008 edit undoSineBot (talk | contribs)Bots2,555,318 editsm Signing comment by 74.183.242.181 - "→9: new section"Next edit →
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== 9 == == 9 ==


x<sup>2</sup>y + xy<sup>2</sup> = 6 <span style="font-size: smaller;" class="autosigned">—Preceding ] comment added by ] (]) 22:03, 23 October 2008 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
x<sup>2</sup>y + xy<sup>2</sup> = 6

Revision as of 22:04, 23 October 2008

x = tan ⁡ ( y ) {\displaystyle x=\tan \left(y\right)}

1 = sec 2 ⁡ ( y ) ∗ d y d x {\displaystyle 1=\sec ^{2}\left(y\right)*{\frac {dy}{dx}}} (Chain rule, derivative of tan=sec^2)

1 sec 2 ⁡ ( y ) = d y d x {\displaystyle {\frac {1}{\sec ^{2}\left(y\right)}}={\frac {dy}{dx}}}

cos 2 ⁡ ( y ) = d y d x {\displaystyle \cos ^{2}\left(y\right)={\frac {dy}{dx}}}

d y d x = cos 2 ⁡ ( y ) {\displaystyle {\frac {dy}{dx}}=\cos ^{2}\left(y\right)}

9

xy + xy = 6 —Preceding unsigned comment added by 74.183.242.181 (talk) 22:03, 23 October 2008 (UTC)