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Mathematics
Problem
For the integral
∫
12
x
(
x
2
+
4
)
5
d
x
\displaystyle \int 12x\,(x^{2}+4)^{5}\,dx
∫
12
x
(
x
2
+
4
)
5
d
x
, which choice of
u
u
u
would most effectively simplify the integrand for antidifferentiation? a)
u
=
12
x
u = 12x
u
=
12
x
b)
u
=
6
x
2
u = 6x^{2}
u
=
6
x
2
c)
u
=
x
2
+
4
u = x^{2}+4
u
=
x
2
+
4
d)
u
=
(
x
2
+
4
)
5
u = (x^{2}+4)^{5}
u
=
(
x
2
+
4
)
5
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