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Prove that
f
(
x
)
=
x
2
decreases on the interval
(
−
∞
,
0
]
and increases on the interval
[
0
,
∞
)
.
Prove that
f
(
x
)
=
x
3
increases everywhere.
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Lesson Specific Problems
Prove that
f
(
x
)
=
x
2
decreases on the interval
(
−
∞
,
0
]
and increases on the interval
[
0
,
∞
)
.
Prove that
f
(
x
)
=
x
3
increases everywhere.