1.

Let function f(x) be defined as f(x) = |sin^(-1)x| + cos^(-1) (1/x) .Then which of the following is /are TRUE.

Answer»

f(X) is injective in its domain.
f(x) is MANY - one in its domain.
Range of f is SINGLETON set
sgn (f(x)) =1 , where sgn x DENOTES signum function of x.

Answer :A::D


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