Differentiation

1982 Q251 JEE Advanced Numerical
14 Mar 2026
If $y = f\left( {{{2x - 1} \over {{x^2} + 1}}} \right)$ and $f'\left( x \right) = \sin {x^2}$, then ${{dy} \over {dx}} = ..........$
1981 Q252 JEE Advanced Numerical
14 Mar 2026
Let $y = {e^{x\,\sin \,{x^3}}} + {\left( {\tan x} \right)^x}$. Find ${{dy} \over {dx}}$
1980 Q253 JEE Advanced Numerical
14 Mar 2026
Given $y = {{5x} \over {3\sqrt {{{\left( {1 - x} \right)}^2}} }} + {\cos ^2}\left( {2x + 1} \right)$; Find ${{dy} \over {dx}}$.
1979 Q254 JEE Advanced Numerical
14 Mar 2026
Find the derivative of $$f\left( x \right) = \left\{ {\matrix{ {{{x - 1} \over {2{x^2} - 7x + 5}}} & {when\,\,x \ne 1} \cr { - {1 \over 3}} & {when\,\,x = 1} \cr } } \right.$$
at $x=1$
1978 Q255 JEE Advanced Numerical
14 Mar 2026
Find the derivative of $\sin \left( {{x^2} + 1} \right)$ with respect to $x$ first principle.