If f(x)=\sin[\pi^{2}]x+\cos[\pi^{2}]x then f'(0) is, here [\pi^{2}] and [-\pi^{2}] greatest integer function not greater than its value

Correct Answer is : 9cos9x−10sin10x

KCET 2012 Math Solved Paper

Question : 45 of 60

Marks: +1, -0

If f(x)=sin[π2]x+cos[π2]x then f′(0) is, here [π2] and [−π2] greatest integer function not greater than its value

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