If f(x) = ∫t cos t dt for t ∈ [0,x], then df/dx = ...(a) cos x – – InterviewSolution

1.	If f(x) = ∫t cos t dt for t ∈ [0,x], then df/dx = ...(a) cos x – x sin x (b) sin x + x cos x(c) x cos x (d) x sin x
Answer» Answer is (c) x cos x

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