Mark (√) against the correct answer in the following:
f : R → R : f(x) = x3 is
f(x) = x3
Since the function f(x) is monotonically increasing from the domain R → R
∴f(x) is one –one
Range of f(x) = ( - ∞,∞)≠R(codomain)
∴f(x) is into
∴ f : R → R: f(x) = x3 is one - one into.