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Consider a function f(x)="sin"^(-1) (2x)...

Consider a function `f(x)="sin"^(-1) (2x)/(1+x)+"cos"^(-1) (1-x^(2))/(1+x^(2))+"tan"^(-1) (2x)/(1-x^(2))-atan^(-1)x(aepsilonR)`, the value of if `f(x)=0` for all `x`:

A

6

B

`-6`

C

2

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
acd
If `0ltxlt1,a=6,` if `xgt1, a=2,` if `xlt-1,a=-2`
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