Integrand size = 13, antiderivative size = 124 \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=-\frac {4}{a^2 \sqrt [3]{x}}+\frac {1}{a \sqrt [3]{x} (a+b x)}+\frac {4 \sqrt [3]{b} \arctan \left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} a^{7/3}}+\frac {2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{a^{7/3}}-\frac {2 \sqrt [3]{b} \log (a+b x)}{3 a^{7/3}} \]
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Time = 0.03 (sec) , antiderivative size = 124, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.462, Rules used = {44, 53, 58, 631, 210, 31} \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=\frac {4 \sqrt [3]{b} \arctan \left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} a^{7/3}}+\frac {2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{a^{7/3}}-\frac {2 \sqrt [3]{b} \log (a+b x)}{3 a^{7/3}}-\frac {4}{a^2 \sqrt [3]{x}}+\frac {1}{a \sqrt [3]{x} (a+b x)} \]
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Rule 31
Rule 44
Rule 53
Rule 58
Rule 210
Rule 631
Rubi steps \begin{align*} \text {integral}& = \frac {1}{a \sqrt [3]{x} (a+b x)}+\frac {4 \int \frac {1}{x^{4/3} (a+b x)} \, dx}{3 a} \\ & = -\frac {4}{a^2 \sqrt [3]{x}}+\frac {1}{a \sqrt [3]{x} (a+b x)}-\frac {(4 b) \int \frac {1}{\sqrt [3]{x} (a+b x)} \, dx}{3 a^2} \\ & = -\frac {4}{a^2 \sqrt [3]{x}}+\frac {1}{a \sqrt [3]{x} (a+b x)}-\frac {2 \sqrt [3]{b} \log (a+b x)}{3 a^{7/3}}-\frac {2 \text {Subst}\left (\int \frac {1}{\frac {a^{2/3}}{b^{2/3}}-\frac {\sqrt [3]{a} x}{\sqrt [3]{b}}+x^2} \, dx,x,\sqrt [3]{x}\right )}{a^2}+\frac {\left (2 \sqrt [3]{b}\right ) \text {Subst}\left (\int \frac {1}{\frac {\sqrt [3]{a}}{\sqrt [3]{b}}+x} \, dx,x,\sqrt [3]{x}\right )}{a^{7/3}} \\ & = -\frac {4}{a^2 \sqrt [3]{x}}+\frac {1}{a \sqrt [3]{x} (a+b x)}+\frac {2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{a^{7/3}}-\frac {2 \sqrt [3]{b} \log (a+b x)}{3 a^{7/3}}-\frac {\left (4 \sqrt [3]{b}\right ) \text {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1-\frac {2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt [3]{a}}\right )}{a^{7/3}} \\ & = -\frac {4}{a^2 \sqrt [3]{x}}+\frac {1}{a \sqrt [3]{x} (a+b x)}+\frac {4 \sqrt [3]{b} \tan ^{-1}\left (\frac {1-\frac {2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt [3]{a}}}{\sqrt {3}}\right )}{\sqrt {3} a^{7/3}}+\frac {2 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )}{a^{7/3}}-\frac {2 \sqrt [3]{b} \log (a+b x)}{3 a^{7/3}} \\ \end{align*}
Time = 0.19 (sec) , antiderivative size = 142, normalized size of antiderivative = 1.15 \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=\frac {-\frac {3 \sqrt [3]{a} (3 a+4 b x)}{\sqrt [3]{x} (a+b x)}+4 \sqrt {3} \sqrt [3]{b} \arctan \left (\frac {1-\frac {2 \sqrt [3]{b} \sqrt [3]{x}}{\sqrt [3]{a}}}{\sqrt {3}}\right )+4 \sqrt [3]{b} \log \left (\sqrt [3]{a}+\sqrt [3]{b} \sqrt [3]{x}\right )-2 \sqrt [3]{b} \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} \sqrt [3]{x}+b^{2/3} x^{2/3}\right )}{3 a^{7/3}} \]
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Time = 0.12 (sec) , antiderivative size = 121, normalized size of antiderivative = 0.98
method | result | size |
risch | \(-\frac {3}{a^{2} x^{\frac {1}{3}}}-\frac {b \,x^{\frac {2}{3}}}{a^{2} \left (b x +a \right )}+\frac {4 \ln \left (x^{\frac {1}{3}}+\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 a^{2} \left (\frac {a}{b}\right )^{\frac {1}{3}}}-\frac {2 \ln \left (x^{\frac {2}{3}}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x^{\frac {1}{3}}+\left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{3 a^{2} \left (\frac {a}{b}\right )^{\frac {1}{3}}}-\frac {4 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (\frac {2 x^{\frac {1}{3}}}{\left (\frac {a}{b}\right )^{\frac {1}{3}}}-1\right )}{3}\right )}{3 a^{2} \left (\frac {a}{b}\right )^{\frac {1}{3}}}\) | \(121\) |
derivativedivides | \(-\frac {3}{a^{2} x^{\frac {1}{3}}}-\frac {3 b \left (\frac {x^{\frac {2}{3}}}{3 b x +3 a}-\frac {4 \ln \left (x^{\frac {1}{3}}+\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{9 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}+\frac {2 \ln \left (x^{\frac {2}{3}}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x^{\frac {1}{3}}+\left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{9 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}+\frac {4 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (\frac {2 x^{\frac {1}{3}}}{\left (\frac {a}{b}\right )^{\frac {1}{3}}}-1\right )}{3}\right )}{9 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{a^{2}}\) | \(124\) |
default | \(-\frac {3}{a^{2} x^{\frac {1}{3}}}-\frac {3 b \left (\frac {x^{\frac {2}{3}}}{3 b x +3 a}-\frac {4 \ln \left (x^{\frac {1}{3}}+\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{9 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}+\frac {2 \ln \left (x^{\frac {2}{3}}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x^{\frac {1}{3}}+\left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{9 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}+\frac {4 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (\frac {2 x^{\frac {1}{3}}}{\left (\frac {a}{b}\right )^{\frac {1}{3}}}-1\right )}{3}\right )}{9 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{a^{2}}\) | \(124\) |
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Time = 0.24 (sec) , antiderivative size = 156, normalized size of antiderivative = 1.26 \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=-\frac {4 \, \sqrt {3} {\left (b x^{2} + a x\right )} \left (\frac {b}{a}\right )^{\frac {1}{3}} \arctan \left (\frac {2}{3} \, \sqrt {3} x^{\frac {1}{3}} \left (\frac {b}{a}\right )^{\frac {1}{3}} - \frac {1}{3} \, \sqrt {3}\right ) + 2 \, {\left (b x^{2} + a x\right )} \left (\frac {b}{a}\right )^{\frac {1}{3}} \log \left (-a x^{\frac {1}{3}} \left (\frac {b}{a}\right )^{\frac {2}{3}} + b x^{\frac {2}{3}} + a \left (\frac {b}{a}\right )^{\frac {1}{3}}\right ) - 4 \, {\left (b x^{2} + a x\right )} \left (\frac {b}{a}\right )^{\frac {1}{3}} \log \left (a \left (\frac {b}{a}\right )^{\frac {2}{3}} + b x^{\frac {1}{3}}\right ) + 3 \, {\left (4 \, b x + 3 \, a\right )} x^{\frac {2}{3}}}{3 \, {\left (a^{2} b x^{2} + a^{3} x\right )}} \]
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Timed out. \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=\text {Timed out} \]
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Time = 0.29 (sec) , antiderivative size = 132, normalized size of antiderivative = 1.06 \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=-\frac {4 \, b x + 3 \, a}{a^{2} b x^{\frac {4}{3}} + a^{3} x^{\frac {1}{3}}} - \frac {4 \, \sqrt {3} \arctan \left (\frac {\sqrt {3} {\left (2 \, x^{\frac {1}{3}} - \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{3 \, a^{2} \left (\frac {a}{b}\right )^{\frac {1}{3}}} - \frac {2 \, \log \left (x^{\frac {2}{3}} - x^{\frac {1}{3}} \left (\frac {a}{b}\right )^{\frac {1}{3}} + \left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{3 \, a^{2} \left (\frac {a}{b}\right )^{\frac {1}{3}}} + \frac {4 \, \log \left (x^{\frac {1}{3}} + \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 \, a^{2} \left (\frac {a}{b}\right )^{\frac {1}{3}}} \]
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Time = 0.28 (sec) , antiderivative size = 145, normalized size of antiderivative = 1.17 \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=\frac {4 \, b \left (-\frac {a}{b}\right )^{\frac {2}{3}} \log \left ({\left | x^{\frac {1}{3}} - \left (-\frac {a}{b}\right )^{\frac {1}{3}} \right |}\right )}{3 \, a^{3}} + \frac {4 \, \sqrt {3} \left (-a b^{2}\right )^{\frac {2}{3}} \arctan \left (\frac {\sqrt {3} {\left (2 \, x^{\frac {1}{3}} + \left (-\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (-\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{3 \, a^{3} b} - \frac {4 \, b x + 3 \, a}{{\left (b x^{\frac {4}{3}} + a x^{\frac {1}{3}}\right )} a^{2}} - \frac {2 \, \left (-a b^{2}\right )^{\frac {2}{3}} \log \left (x^{\frac {2}{3}} + x^{\frac {1}{3}} \left (-\frac {a}{b}\right )^{\frac {1}{3}} + \left (-\frac {a}{b}\right )^{\frac {2}{3}}\right )}{3 \, a^{3} b} \]
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Time = 0.17 (sec) , antiderivative size = 151, normalized size of antiderivative = 1.22 \[ \int \frac {1}{x^{4/3} (a+b x)^2} \, dx=\frac {4\,b^{1/3}\,\ln \left (16\,a^{7/3}\,b^{8/3}+16\,a^2\,b^3\,x^{1/3}\right )}{3\,a^{7/3}}-\frac {\frac {3}{a}+\frac {4\,b\,x}{a^2}}{a\,x^{1/3}+b\,x^{4/3}}-\frac {4\,b^{1/3}\,\ln \left (16\,a^{7/3}\,b^{8/3}\,{\left (\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )}^2+16\,a^2\,b^3\,x^{1/3}\right )\,\left (\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )}{3\,a^{7/3}}+\frac {b^{1/3}\,\ln \left (9\,a^{7/3}\,b^{8/3}\,{\left (-\frac {2}{3}+\frac {\sqrt {3}\,2{}\mathrm {i}}{3}\right )}^2+16\,a^2\,b^3\,x^{1/3}\right )\,\left (-\frac {2}{3}+\frac {\sqrt {3}\,2{}\mathrm {i}}{3}\right )}{a^{7/3}} \]
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