MCQ
જો $A = {{{2^x}\cot x} \over {\sqrt x }},$ તો ${{dA} \over {dx}} = $
- ✓${{{2^{x - 1}}\left\{ { - 2x\,{\rm{cos}}{\rm{e}}{{\rm{c}}^2}x + \cot x.\log \left( {{{{4^x}} \over e}} \right)} \right\}} \over {{x^{3/2}}}}$
- B${{{2^{x - 1}}\left\{ { - 2x\cos {\rm{e}}{{\rm{c}}^2}x + \cot x.\log \left( {{{{4^x}} \over e}} \right)} \right\}} \over x}$
- C${{2x\left\{ { - 2x{\rm{cose}}{{\rm{c}}^2}x + \cot x.\log \left( {{{{4^x}} \over e}} \right)} \right\}} \over {{x^{{\rm{3/2}}}}}}$
- Dએક પણ નહીં