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