Evaluate the indefinite integral.
∫
4
x
+
7
x
2
+
1
d
x
\displaystyle \int{\frac{{{4}{x}+{7}}}{{{x}^{{2}}+{1}}}}{\left.{d}{x}\right.}
∫
x
2
+
1
4
x
+
7
d
x
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