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Let f(x)=int0^xabs(sint)dt, then...

Let `f(x)=int_0^xabs(sint)dt`, then

A

f is continous everywhere

B

f(x) is differentiable at `x=pi`

C

`f(pi)=2`

D

f`f(x)ge0` for all x

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A, C, D
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