Explain Onto function R II sin
an functieY' but R R dctin•Nf
is Range or f I— l. I I e..-doma.n
In to that a furXtionf: A —9 R is Onto wc Stan
My y e B and try to A such that fu) y,
fis said to one-to-one if it not take same value
two disurxt points in its For example, O
tbcn
going
tan a k.
= l. Note that a function f: R R cannot
also a
as + = fix ) for some T 0.
In or&r to show that a function f: A B is one-to-one.
we may take my x, y e .4 such that fix) and try to
If MA i m M B) = mm S n). then of injec•
