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If int (x+sqrt(1+x^(2)))^(n)dx. =(1)/(...

If `int (x+sqrt(1+x^(2)))^(n)dx`.
`=(1)/(a(n+1)){x+sqrt(1+x^(2))}^(n+1)+(1)/(-b(n-1)){x+sqrt(1+x^(2))}^(n-1)+C` Then `(a+b)` is equal to

A

2

B

3

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
C
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