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If x= sqrt(1+cos y) then dy/dx in term ...

If ` x= sqrt(1+cos y)` then dy/dx in term of x is

A

`2/(sqrt(2-x^(2)))`

B

`-2/(sqrt(2-x^(2)))`

C

`(-2sqrt2)/(sqrt(2-x^(2)))`

D

`(2sqrt2)/(sqrt(2-x^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
B
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