One-one function

One-one function:

A real function $f:S \to T$ is known as

one-one function if distinct elements of S have

distinct images in T.i.e. if $fx_1 = x_2 => f(x_1) = f(x_2)$

for all values $x_1 , x_2 \in S$

.

« One-one correspondence

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