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        Q. (a) Differentiate w.r.t x:        (i) cos-1(ex)        (ii) log7(log x)    (b) Differentiate cos x w.r.t. ex.    (c)(Refer to the picture below.)
6 months ago

## Answers : (2)

Arun
23048 Points
							Dear student Please ask only one question in one thread. (a) (i) dy/dx = – e^x/ sqrt (1 – e^2x)  Hope it helps

6 months ago
Pintu Chaudhary
37 Points
							Dear friend for question no (c)         y=logx      $\frac{\partial^2 y}{\partial x^2}$   $= \frac{\partial }{\partial x}\left ( \frac{\partial y}{\partial x} \right )$                 $= \frac{\partial }{\partial x}\left ( \frac{\partial \left ( logx\right )}{\partial x} \right )$                  $= \frac{\partial }{\partial x}\left ( \frac{1}{x} \right )$                    = – 1/x2  Answer. Please ask questions one by one. Hope it may help you. thanks

6 months ago
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• Revision Notes
• Test paper with Video Solution
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• Study Planner
• NCERT Solutions
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