Question

Let X = {-1, 0, 1}, Y = {0, 2} and a function f : X → Y defiend by y = 2x⁴, is ____________.

Options

• one-one onto

• one-one into

• many-one onto

• many-one into

Answer 1

Let X = {-1, 0, 1}, Y = {0, 2} and a function f : X → Y defiend by y = 2x⁴, is many-one onto.