AP ICET 2015 Paper

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Question : 116 of 200

Marks: +1, -0

Let

f : ℝ \to ℝ

be a function defined by

f(x)=2x^{3}+8

for all

x∊ℝ

, then the function f is

one one but not onto
onto but not one one
A bijection
Neither one one nor onto

Solution:

Given :

f(x)=2x^3+8

for all x ∈ R.
Since

2x^3+8

is one-one and onto,
f(x) is a bijective function.

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