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If y=cos^(-1)(cosx),t h e n(dy)/(dx) is ...

If `y=cos^(-1)(cosx),t h e n(dy)/(dx)` is equal to `x/y` (b) `y/(x^2)` `(x^2-y^2)/(x^2+y^2)` (d) `y/x`

A

1

B

-1

C

`(1)/(sqrt(2))`

D

`-(1)/(sqrt(2))`

Text Solution

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The correct Answer is:
B
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MOTION-METHOD OF DIFFERENTIATION-EXERCISE - 1
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