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Let f : (0,oo) to R and F(x)=int(0)^(x)t...

Let `f : (0,oo) to R` and `F(x)=int_(0)^(x)t f(t)dt`.
If `F(x^(2))=x^(4)+x^(5)`, then

A

`F(4)=7`

B

`f(x)` is continuous everywhere

C

`f(x)` is increases for all `x gt 0`

D

`f(x)` is onto

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