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Mathematics
Mathematics
Problem
Find the intervals of increase and decrease of the function
f
(
x
)
=
x
3
−
6
x
2
+
9
x
+
1
f(x)=x^{3}-6x^{2}+9x+1
f
(
x
)
=
x
3
−
6
x
2
+
9
x
+
1
defined on
(
−
∞
,
∞
)
(-\infty,\infty)
(
−
∞
,
∞
)
.
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