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Evaluate: (i) int(cos2x+x+1)/(x^2+sin2x+...

Evaluate: (i) `int(cos2x+x+1)/(x^2+sin2x+2x)\ dx` (ii) `int1/(cos(x+a)cos(x+b))\ dx`

A

`(1)/(sin(b-a))log|cos(x+b)/cos(x+a)|+c`

B

`(1)/(sin(b-a))log|cos(x+a)/cos(x+b)|+c`

C

`(1)/(cos(b-a))log|cos(x+b)/cos(x+a)|+c`

D

`(1)/(cos(b-a))log|cos(x+a)/cos(x+b)|+c`

Text Solution

Verified by Experts

The correct Answer is:
B
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