Answer:
(i)
defined by
f(x) = 3 ? 4x
Let
x1, x2
be
such that f(x1) = f(x2)
is one ? one.
Let
be any real
number.
f(x) = y
Corresponding
to every element
there
exists
(ii)
f :
defined by
f(x) = 1 + x2
Let
x1, x2
be
such that f(x1 = f(x2)
is not
one-one.
As
Range of f is
greater than or equal to 1
is not onto.
Thus,
f is neither one-one nor onto.
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