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If the following functions functions are...

If the following functions functions are defined from `[-1, 1]` to [-1, 1], select those which are not bijective.

A

`sin(sin^(-1)x)`

B

`2/pi sin^(-1)(sin x)`

C

`(sgn(x))ln(e^(x))`

D

`x^(3)(sgn(x))`

Text Solution

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The correct Answer is:
B, C, D
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