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Mathematics
Problem
Consider the function
f
:
R
→
R
f:\mathbb{R}\to\mathbb{R}
f
:
R
→
R
defined by
f
(
x
)
=
x
3
−
6
x
f(x)=x^{3}-6x
f
(
x
)
=
x
3
−
6
x
. Which one of the following is TRUE about
f
f
f
? a)
f
f
f
is one–one but not onto. b)
f
f
f
is onto but not one–one. c)
f
f
f
is both one–one and onto. d)
f
f
f
is neither one–one nor onto.
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