Let for . Then the function…

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let

f(x)=\frac{x^2-4}{x^2+4}

for

|x|\ge2

. Then the function

f:(-\infty,-2]\cup[2,\infty)\to(-1,1)

is (a) One-one into (b) One-one onto (c) Many-one into (d) Many-one onto