Question

if fx = x cos x then find its double derivative ​

Answer 1

Hii

you are welcome in my and

F(x) = xcosx

diffrenciating w .r to x

f'(x) = cosx - xsinx

again

f"(x)= -sinx - sinx -xcox

f"(x) = -2sinx - f'(x)

Hope it may helps you

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