Optimal. Leaf size=94 \[ \frac {a^3 (A b-a B)}{2 b^5 (a+b x)^2}-\frac {a^2 (3 A b-4 a B)}{b^5 (a+b x)}-\frac {3 a (A b-2 a B) \log (a+b x)}{b^5}+\frac {x (A b-3 a B)}{b^4}+\frac {B x^2}{2 b^3} \]
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Rubi [A] time = 0.08, antiderivative size = 94, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.062, Rules used = {77} \[ \frac {a^3 (A b-a B)}{2 b^5 (a+b x)^2}-\frac {a^2 (3 A b-4 a B)}{b^5 (a+b x)}+\frac {x (A b-3 a B)}{b^4}-\frac {3 a (A b-2 a B) \log (a+b x)}{b^5}+\frac {B x^2}{2 b^3} \]
Antiderivative was successfully verified.
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Rule 77
Rubi steps
\begin {align*} \int \frac {x^3 (A+B x)}{(a+b x)^3} \, dx &=\int \left (\frac {A b-3 a B}{b^4}+\frac {B x}{b^3}+\frac {a^3 (-A b+a B)}{b^4 (a+b x)^3}-\frac {a^2 (-3 A b+4 a B)}{b^4 (a+b x)^2}+\frac {3 a (-A b+2 a B)}{b^4 (a+b x)}\right ) \, dx\\ &=\frac {(A b-3 a B) x}{b^4}+\frac {B x^2}{2 b^3}+\frac {a^3 (A b-a B)}{2 b^5 (a+b x)^2}-\frac {a^2 (3 A b-4 a B)}{b^5 (a+b x)}-\frac {3 a (A b-2 a B) \log (a+b x)}{b^5}\\ \end {align*}
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Mathematica [A] time = 0.08, size = 86, normalized size = 0.91 \[ \frac {\frac {a^3 (A b-a B)}{(a+b x)^2}+\frac {2 a^2 (4 a B-3 A b)}{a+b x}+2 b x (A b-3 a B)+6 a (2 a B-A b) \log (a+b x)+b^2 B x^2}{2 b^5} \]
Antiderivative was successfully verified.
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fricas [A] time = 1.03, size = 171, normalized size = 1.82 \[ \frac {B b^{4} x^{4} + 7 \, B a^{4} - 5 \, A a^{3} b - 2 \, {\left (2 \, B a b^{3} - A b^{4}\right )} x^{3} - {\left (11 \, B a^{2} b^{2} - 4 \, A a b^{3}\right )} x^{2} + 2 \, {\left (B a^{3} b - 2 \, A a^{2} b^{2}\right )} x + 6 \, {\left (2 \, B a^{4} - A a^{3} b + {\left (2 \, B a^{2} b^{2} - A a b^{3}\right )} x^{2} + 2 \, {\left (2 \, B a^{3} b - A a^{2} b^{2}\right )} x\right )} \log \left (b x + a\right )}{2 \, {\left (b^{7} x^{2} + 2 \, a b^{6} x + a^{2} b^{5}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 1.00, size = 100, normalized size = 1.06 \[ \frac {3 \, {\left (2 \, B a^{2} - A a b\right )} \log \left ({\left | b x + a \right |}\right )}{b^{5}} + \frac {B b^{3} x^{2} - 6 \, B a b^{2} x + 2 \, A b^{3} x}{2 \, b^{6}} + \frac {7 \, B a^{4} - 5 \, A a^{3} b + 2 \, {\left (4 \, B a^{3} b - 3 \, A a^{2} b^{2}\right )} x}{2 \, {\left (b x + a\right )}^{2} b^{5}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 117, normalized size = 1.24 \[ \frac {A \,a^{3}}{2 \left (b x +a \right )^{2} b^{4}}-\frac {B \,a^{4}}{2 \left (b x +a \right )^{2} b^{5}}+\frac {B \,x^{2}}{2 b^{3}}-\frac {3 A \,a^{2}}{\left (b x +a \right ) b^{4}}-\frac {3 A a \ln \left (b x +a \right )}{b^{4}}+\frac {A x}{b^{3}}+\frac {4 B \,a^{3}}{\left (b x +a \right ) b^{5}}+\frac {6 B \,a^{2} \ln \left (b x +a \right )}{b^{5}}-\frac {3 B a x}{b^{4}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.05, size = 108, normalized size = 1.15 \[ \frac {7 \, B a^{4} - 5 \, A a^{3} b + 2 \, {\left (4 \, B a^{3} b - 3 \, A a^{2} b^{2}\right )} x}{2 \, {\left (b^{7} x^{2} + 2 \, a b^{6} x + a^{2} b^{5}\right )}} + \frac {B b x^{2} - 2 \, {\left (3 \, B a - A b\right )} x}{2 \, b^{4}} + \frac {3 \, {\left (2 \, B a^{2} - A a b\right )} \log \left (b x + a\right )}{b^{5}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.07, size = 108, normalized size = 1.15 \[ \frac {x\,\left (4\,B\,a^3-3\,A\,a^2\,b\right )+\frac {7\,B\,a^4-5\,A\,a^3\,b}{2\,b}}{a^2\,b^4+2\,a\,b^5\,x+b^6\,x^2}+x\,\left (\frac {A}{b^3}-\frac {3\,B\,a}{b^4}\right )+\frac {B\,x^2}{2\,b^3}+\frac {\ln \left (a+b\,x\right )\,\left (6\,B\,a^2-3\,A\,a\,b\right )}{b^5} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 1.24, size = 107, normalized size = 1.14 \[ \frac {B x^{2}}{2 b^{3}} + \frac {3 a \left (- A b + 2 B a\right ) \log {\left (a + b x \right )}}{b^{5}} + x \left (\frac {A}{b^{3}} - \frac {3 B a}{b^{4}}\right ) + \frac {- 5 A a^{3} b + 7 B a^{4} + x \left (- 6 A a^{2} b^{2} + 8 B a^{3} b\right )}{2 a^{2} b^{5} + 4 a b^{6} x + 2 b^{7} x^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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