Optimal. Leaf size=605 \[ \frac {\tan ^{-1}\left (\frac {-\sqrt {8 a^2-4 a c+b^2}+4 a x+b}{\sqrt {2} \sqrt {-b \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+4 a^2+2 a c}}\right ) \left (-a \left (A \left (b-\sqrt {8 a^2-4 a c+b^2}\right )-C \sqrt {8 a^2-4 a c+b^2}+b C+2 c D\right )+b D \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+4 a^2 B\right )}{\sqrt {2} a \sqrt {8 a^2-4 a c+b^2} \sqrt {-b \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+4 a^2+2 a c}}-\frac {\tan ^{-1}\left (\frac {\sqrt {8 a^2-4 a c+b^2}+4 a x+b}{\sqrt {2} \sqrt {-b \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+4 a^2+2 a c}}\right ) \left (-a \left (A \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+C \sqrt {8 a^2-4 a c+b^2}+b C+2 c D\right )+b D \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+4 a^2 B\right )}{\sqrt {2} a \sqrt {8 a^2-4 a c+b^2} \sqrt {-b \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+4 a^2+2 a c}}-\frac {\log \left (x \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+2 a x^2+2 a\right ) \left (D \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+2 a (A-C)\right )}{4 a \sqrt {8 a^2-4 a c+b^2}}+\frac {\log \left (x \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+2 a x^2+2 a\right ) \left (D \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+2 a (A-C)\right )}{4 a \sqrt {8 a^2-4 a c+b^2}} \]
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Rubi [A] time = 4.54, antiderivative size = 605, normalized size of antiderivative = 1.00, number of steps used = 9, number of rules used = 5, integrand size = 38, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.132, Rules used = {2086, 634, 618, 204, 628} \[ \frac {\tan ^{-1}\left (\frac {-\sqrt {8 a^2-4 a c+b^2}+4 a x+b}{\sqrt {2} \sqrt {-b \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+4 a^2+2 a c}}\right ) \left (-a \left (A \left (b-\sqrt {8 a^2-4 a c+b^2}\right )-C \sqrt {8 a^2-4 a c+b^2}+b C+2 c D\right )+b D \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+4 a^2 B\right )}{\sqrt {2} a \sqrt {8 a^2-4 a c+b^2} \sqrt {-b \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+4 a^2+2 a c}}-\frac {\tan ^{-1}\left (\frac {\sqrt {8 a^2-4 a c+b^2}+4 a x+b}{\sqrt {2} \sqrt {-b \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+4 a^2+2 a c}}\right ) \left (-a \left (A \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+C \sqrt {8 a^2-4 a c+b^2}+b C+2 c D\right )+b D \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+4 a^2 B\right )}{\sqrt {2} a \sqrt {8 a^2-4 a c+b^2} \sqrt {-b \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+4 a^2+2 a c}}-\frac {\log \left (x \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+2 a x^2+2 a\right ) \left (D \left (b-\sqrt {8 a^2-4 a c+b^2}\right )+2 a (A-C)\right )}{4 a \sqrt {8 a^2-4 a c+b^2}}+\frac {\log \left (x \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+2 a x^2+2 a\right ) \left (D \left (\sqrt {8 a^2-4 a c+b^2}+b\right )+2 a (A-C)\right )}{4 a \sqrt {8 a^2-4 a c+b^2}} \]
Antiderivative was successfully verified.
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Rule 204
Rule 618
Rule 628
Rule 634
Rule 2086
Rubi steps
\begin {align*} \int \frac {A+B x+C x^2+D x^3}{a+b x+c x^2+b x^3+a x^4} \, dx &=-\frac {\int \frac {A b-2 a B-A \sqrt {8 a^2+b^2-4 a c}+2 a D+\left (2 a A-2 a C+b D-\sqrt {8 a^2+b^2-4 a c} D\right ) x}{2 a+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2} \, dx}{\sqrt {8 a^2+b^2-4 a c}}+\frac {\int \frac {A b-2 a B+A \sqrt {8 a^2+b^2-4 a c}+2 a D+\left (2 a A-2 a C+b D+\sqrt {8 a^2+b^2-4 a c} D\right ) x}{2 a+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2} \, dx}{\sqrt {8 a^2+b^2-4 a c}}\\ &=-\frac {\left (2 a (A-C)+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) D\right ) \int \frac {b-\sqrt {8 a^2+b^2-4 a c}+4 a x}{2 a+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2} \, dx}{4 a \sqrt {8 a^2+b^2-4 a c}}+\frac {\left (2 a (A-C)+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) D\right ) \int \frac {b+\sqrt {8 a^2+b^2-4 a c}+4 a x}{2 a+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2} \, dx}{4 a \sqrt {8 a^2+b^2-4 a c}}+\frac {\left (4 a^2 B+b \left (b-\sqrt {8 a^2+b^2-4 a c}\right ) D-a \left (A \left (b-\sqrt {8 a^2+b^2-4 a c}\right )+b C-\sqrt {8 a^2+b^2-4 a c} C+2 c D\right )\right ) \int \frac {1}{2 a+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2} \, dx}{2 a \sqrt {8 a^2+b^2-4 a c}}-\frac {\left (4 a^2 B+b \left (b+\sqrt {8 a^2+b^2-4 a c}\right ) D-a \left (A \left (b+\sqrt {8 a^2+b^2-4 a c}\right )+b C+\sqrt {8 a^2+b^2-4 a c} C+2 c D\right )\right ) \int \frac {1}{2 a+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2} \, dx}{2 a \sqrt {8 a^2+b^2-4 a c}}\\ &=-\frac {\left (2 a (A-C)+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) D\right ) \log \left (2 a+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2\right )}{4 a \sqrt {8 a^2+b^2-4 a c}}+\frac {\left (2 a (A-C)+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) D\right ) \log \left (2 a+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2\right )}{4 a \sqrt {8 a^2+b^2-4 a c}}-\frac {\left (4 a^2 B+b \left (b-\sqrt {8 a^2+b^2-4 a c}\right ) D-a \left (A \left (b-\sqrt {8 a^2+b^2-4 a c}\right )+b C-\sqrt {8 a^2+b^2-4 a c} C+2 c D\right )\right ) \operatorname {Subst}\left (\int \frac {1}{-16 a^2+\left (b-\sqrt {8 a^2+b^2-4 a c}\right )^2-x^2} \, dx,x,b-\sqrt {8 a^2+b^2-4 a c}+4 a x\right )}{a \sqrt {8 a^2+b^2-4 a c}}+\frac {\left (4 a^2 B+b \left (b+\sqrt {8 a^2+b^2-4 a c}\right ) D-a \left (A \left (b+\sqrt {8 a^2+b^2-4 a c}\right )+b C+\sqrt {8 a^2+b^2-4 a c} C+2 c D\right )\right ) \operatorname {Subst}\left (\int \frac {1}{-16 a^2+\left (b+\sqrt {8 a^2+b^2-4 a c}\right )^2-x^2} \, dx,x,b+\sqrt {8 a^2+b^2-4 a c}+4 a x\right )}{a \sqrt {8 a^2+b^2-4 a c}}\\ &=\frac {\left (4 a^2 B+b \left (b-\sqrt {8 a^2+b^2-4 a c}\right ) D-a \left (A \left (b-\sqrt {8 a^2+b^2-4 a c}\right )+b C-\sqrt {8 a^2+b^2-4 a c} C+2 c D\right )\right ) \tan ^{-1}\left (\frac {b-\sqrt {8 a^2+b^2-4 a c}+4 a x}{\sqrt {2} \sqrt {4 a^2+2 a c-b \left (b-\sqrt {8 a^2+b^2-4 a c}\right )}}\right )}{\sqrt {2} a \sqrt {8 a^2+b^2-4 a c} \sqrt {4 a^2+2 a c-b \left (b-\sqrt {8 a^2+b^2-4 a c}\right )}}-\frac {\left (4 a^2 B+b \left (b+\sqrt {8 a^2+b^2-4 a c}\right ) D-a \left (A \left (b+\sqrt {8 a^2+b^2-4 a c}\right )+b C+\sqrt {8 a^2+b^2-4 a c} C+2 c D\right )\right ) \tan ^{-1}\left (\frac {b+\sqrt {8 a^2+b^2-4 a c}+4 a x}{\sqrt {2} \sqrt {4 a^2+2 a c-b \left (b+\sqrt {8 a^2+b^2-4 a c}\right )}}\right )}{\sqrt {2} a \sqrt {8 a^2+b^2-4 a c} \sqrt {4 a^2+2 a c-b \left (b+\sqrt {8 a^2+b^2-4 a c}\right )}}-\frac {\left (2 a (A-C)+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) D\right ) \log \left (2 a+\left (b-\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2\right )}{4 a \sqrt {8 a^2+b^2-4 a c}}+\frac {\left (2 a (A-C)+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) D\right ) \log \left (2 a+\left (b+\sqrt {8 a^2+b^2-4 a c}\right ) x+2 a x^2\right )}{4 a \sqrt {8 a^2+b^2-4 a c}}\\ \end {align*}
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Mathematica [C] time = 0.07, size = 98, normalized size = 0.16 \[ \text {RootSum}\left [\text {$\#$1}^4 a+\text {$\#$1}^3 b+\text {$\#$1}^2 c+\text {$\#$1} b+a\& ,\frac {\text {$\#$1}^3 D \log (x-\text {$\#$1})+\text {$\#$1}^2 C \log (x-\text {$\#$1})+A \log (x-\text {$\#$1})+\text {$\#$1} B \log (x-\text {$\#$1})}{4 \text {$\#$1}^3 a+3 \text {$\#$1}^2 b+2 \text {$\#$1} c+b}\& \right ] \]
Antiderivative was successfully verified.
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fricas [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: TypeError} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.09, size = 2105, normalized size = 3.48 \[ \text {result too large to display} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {D x^{3} + C x^{2} + B x + A}{a x^{4} + b x^{3} + c x^{2} + b x + a}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.00 \[ \int \frac {A+B\,x+C\,x^2+x^3\,D}{a\,x^4+b\,x^3+c\,x^2+b\,x+a} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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