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Mathematics
Problem
Given that
y
=
x
4
+
8
x
3
−
12
x
2
+
6
x
−
10
y = x^4 + 8x^3 - 12x^2 + 6x - 10
y
=
x
4
+
8
x
3
−
12
x
2
+
6
x
−
10
Find the values of
x
x
x
for which
d
2
y
d
x
2
\frac{d^2y}{dx^2}
d
x
2
d
2
y
is increasing. Give your answer in inequality notation.
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