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Mathematics
Mathematics
Problem
∫
x
2
+
1
x
4
+
k
x
2
+
1
d
x
.
\int \frac{x^2 + 1}{x^4 + kx^2 + 1} dx.
∫
x
4
+
k
x
2
+
1
x
2
+
1
d
x
.
Divide numerator and denominator by
x
2
x^2
x
2
.
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