If k int(0)^(1) x f (3 x) dx = int(0)^(...

If `k int_(0)^(1) x f (3 x) dx = int_(0)^(3) t f(t) dt` then `k=`

A

9

B

3

C

`1/9`

D

`1/3`

Verified by Experts

The correct Answer is:

A

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