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The value of sum(r=1)^n1/(sqrt(a+r x)+sq...

The value of `sum_(r=1)^n1/(sqrt(a+r x)+sqrt(a+(r-1)x))` is -

A

`n/(sqrta + sqrt(a+nx))`

B

`(sqrt(a+nx) - sqrta)/n`

C

`(n(sqrt(a+nx)-a))/x`

D

`(xsqrt(a+nx)-sqrta)/x`

Text Solution

Verified by Experts

The correct Answer is:
A
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