Q. 85.0( 3 Votes )

If <a name="MTBla

Answer :

For ,

y=sin-1 (sin x)

= sin-1 ( sin (π –(π -x))

(to get y in principal range of sin-1 x)


y = π - x

From the last problem we see that and

So, y is not differentiable at

Extending this, we can say that y is not differentiable at x = (2n+1)

So, for


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