1.

f:(-1,1) to B defined byf(x)=tan^(-1)((2x)/(1-x^(2))) is bijection then B =

Answer»

`[-pi/4, pi/4]`
`(-pi/2, pi/2)`
`(-pi/2,pi/4]`
`[pi/4, pi/2]`

ANSWER :A


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