Offline paper
Mathematics · 2013
JEE Main 2013 · 2013-04-07 Offline · Q17
If y= sec ( tan^-1 x), then (d y)/(d x) at x=1 is equal to:
If $\displaystyle y=\sec \left(\tan ^{-1} x\right)$, then $\displaystyle \frac{d y}{d x}$ at $\displaystyle x=1$ is equal to :
Official answer
(2)
$\displaystyle \frac{1}{\sqrt{2}}$
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JEE Main 2013 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.