Question

f: [- π/2,π/2] —>[-1,1] is a bijection if.....,Select Proper option from the given options.
(a) f(x) =| x |
(b) f(x) = sinx
(c) f(x)=x²
(d) f(x)=cosx

Answer 1

Option "B",f(x) = sinx is the correct answer.

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