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Differentiation question

2020 · 7 Jan · Shift 1 · Q36

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PYQ Library
JEE Main
Mathematics
Differentiation
2020 · 7 Jan · Shift 1 · Q36

Differentiation question

2020 · 7 Jan · Shift 1 · Q36

JEE MainMathematicsDifferentiationMCQ+4 / −1

If

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){{dy} \over {d\alpha }}\,\,at\,\alpha = {{5\pi } \over 6}is

:

A
4
B
-4
C
${4 \over 3}$
D
- ${1 \over 4}$

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