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If y=cos((1)/(2)cos^(-1)x)," then "(dx)/...

If `y=cos((1)/(2)cos^(-1)x)," then "(dx)/(dy)=`

A

`(1)/(2sqrt(2(1+x)))`

B

`(2sqrt(2))/(sqrt(1+x))`

C

`(sqrt(1+x))/(2sqrt(2))`

D

`(1)/(2sqrt(1+2x))`

Text Solution

Verified by Experts

The correct Answer is:
A
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