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Value of int(0)^(2)3x^(2)dx+int(0)^(pi//...

Value of `int_(0)^(2)3x^(2)dx+int_(0)^(pi//2)sinxdx`is

A

9

B

7

C

8

D

13

Text Solution

Verified by Experts

The correct Answer is:
A
`int_(0)^(2) 3x^(2) dx+int _(0)^(pi//2)sin xdx`
`=x^(3)|_(0)^(2)-cos x|_(0)^(pi//2)`
`=2^(3)-(cos ""(pi)/(2)- cos 0^(@))`
`=8 +1=9`
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