Which of the following is/are true ?...

Which of the following is/are true ?

`(dy)/(dx) ` for `y = sin^(-1)(cosx) ` where `x in (0,pi)` , is - 1

`(dy)/(dx) ` for `y = sin^(-1)(cosx) ` where `x in (pi,2pi)` , is - 1

`(dy)/(dx) ` for `y = cos^(-1)(cosx) ` where `x in (-pi/2,pi/2)` is -1

`(dy)/(dx) ` for `y = cos^(-1)(cosx) ` where `x in (pi/2,(3pi)/2)` is -1

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The correct Answer is:

A, B, C

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It maintain uniform genetic purity of organisms for successive generations

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