1.

The function f: [0, 2π] ➝ [-1, 1] defined by f(x) = sin x is (a) One to one (b) Onto (c) Bijection (d) Cannot be defined

Answer»

(b) Onto

For x = π/4, x = 3π/4, f(x) = 1/√2

So it is not one-to-one 

So it is an onto function



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