Question
$\int {\frac{{a{x^3} + b{x^2} + c}}{{{x^4}}}\,\,dx} $ equals to
$ = a\log x - \frac{b}{x} - \frac{c}{{3{x^3}}} + c$.
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$\left[\begin{array}{ccc}2 & 1 & 3 \\ 4 & -1 & 0 \\ -7 & 2 & 1\end{array}\right]$