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Let `f:(0, oo) in R and F(x) =underset(0)overset(x) int f(t) dt`. If `F(x^(2))=x^(2)(1+x)` then f (4) equals

A

`5//4`

B

`7`

C

`4`

D

`2`

Text Solution

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The correct Answer is:
C
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