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If f(x)=(ax + b)sinx+(cx +d)cos x, then ...

If `f(x)=(ax + b)sinx+(cx +d)cos x`, then the values of a b, c and d such that `f"(x)=xcos x` for all x, then (a + b + c + d)is

A

a = d = 1

B

b = 0

C

c = 0

D

b = c

Text Solution

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The correct Answer is:
A, B, C, D
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