JEE Main 20207 Jan, Morning shiftMathematicsMediumLimit, Continuity and Differentiability420× since 2002If y(α)=2(tanα+cotα1+tan2α)+1sin2α,α∈(3π4,π)y\left( \alpha \right) = \sqrt {2\left( {{{\tan \alpha + \cot \alpha } \over {1 + {{\tan }^2}\alpha }}} \right) + {1 \over {{{\sin }^2}\alpha }}} ,\alpha \in \left( {{{3\pi } \over 4},\pi } \right)y(α)=2(1+tan2αtanα+cotα)+sin2α1,α∈(43π,π) dydα at α=5π6is{{dy} \over {d\alpha }}\,\,at\,\alpha = {{5\pi } \over 6}isdαdyatα=65πis :AOption A. 4BOption B. -4COption C. 43{4 \over 3}34DOption D. -14{1 \over 4}41CheckSkip · show solution
