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Mathematics
Mathematics
Problem
Evaluate
∫
x
3
(
1
+
x
4
)
2
d
x
\displaystyle\int \frac{x^{3}}{\bigl(1+x^{4}\bigr)^{2}}\,dx
∫
(
1
+
x
4
)
2
x
3
d
x
.
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