Integrand size = 22, antiderivative size = 286 \[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=\frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 x \left (a+b x^3\right )^2}{18 a^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {5 \left (a+b x^3\right )^3 \arctan \left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{9 \sqrt {3} a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 \left (a+b x^3\right )^3 \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{27 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {5 \left (a+b x^3\right )^3 \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{54 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \]
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Time = 0.10 (sec) , antiderivative size = 286, normalized size of antiderivative = 1.00, number of steps used = 9, number of rules used = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.364, Rules used = {1357, 205, 206, 31, 648, 631, 210, 642} \[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=\frac {5 x \left (a+b x^3\right )^2}{18 a^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {5 \left (a+b x^3\right )^3 \arctan \left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{9 \sqrt {3} a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 \left (a+b x^3\right )^3 \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{27 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {5 \left (a+b x^3\right )^3 \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{54 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \]
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Rule 31
Rule 205
Rule 206
Rule 210
Rule 631
Rule 642
Rule 648
Rule 1357
Rubi steps \begin{align*} \text {integral}& = \frac {\left (2 a b+2 b^2 x^3\right )^3 \int \frac {1}{\left (2 a b+2 b^2 x^3\right )^3} \, dx}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \\ & = \frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {\left (5 \left (2 a b+2 b^2 x^3\right )^3\right ) \int \frac {1}{\left (2 a b+2 b^2 x^3\right )^2} \, dx}{12 a b \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \\ & = \frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 x \left (a+b x^3\right )^2}{18 a^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {\left (5 \left (2 a b+2 b^2 x^3\right )^3\right ) \int \frac {1}{2 a b+2 b^2 x^3} \, dx}{36 a^2 b^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \\ & = \frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 x \left (a+b x^3\right )^2}{18 a^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {\left (5 \left (2 a b+2 b^2 x^3\right )^3\right ) \int \frac {1}{\sqrt [3]{2} \sqrt [3]{a} \sqrt [3]{b}+\sqrt [3]{2} b^{2/3} x} \, dx}{108\ 2^{2/3} a^{8/3} b^{8/3} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {\left (5 \left (2 a b+2 b^2 x^3\right )^3\right ) \int \frac {2 \sqrt [3]{2} \sqrt [3]{a} \sqrt [3]{b}-\sqrt [3]{2} b^{2/3} x}{2^{2/3} a^{2/3} b^{2/3}-2^{2/3} \sqrt [3]{a} b x+2^{2/3} b^{4/3} x^2} \, dx}{108\ 2^{2/3} a^{8/3} b^{8/3} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \\ & = \frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 x \left (a+b x^3\right )^2}{18 a^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 \left (a+b x^3\right )^3 \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{27 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {\left (5 \left (2 a b+2 b^2 x^3\right )^3\right ) \int \frac {-2^{2/3} \sqrt [3]{a} b+2\ 2^{2/3} b^{4/3} x}{2^{2/3} a^{2/3} b^{2/3}-2^{2/3} \sqrt [3]{a} b x+2^{2/3} b^{4/3} x^2} \, dx}{432 a^{8/3} b^{10/3} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {\left (5 \left (2 a b+2 b^2 x^3\right )^3\right ) \int \frac {1}{2^{2/3} a^{2/3} b^{2/3}-2^{2/3} \sqrt [3]{a} b x+2^{2/3} b^{4/3} x^2} \, dx}{72 \sqrt [3]{2} a^{7/3} b^{7/3} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \\ & = \frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 x \left (a+b x^3\right )^2}{18 a^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 \left (a+b x^3\right )^3 \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{27 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {5 \left (a+b x^3\right )^3 \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{54 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {\left (5 \left (2 a b+2 b^2 x^3\right )^3\right ) \text {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1-\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a}}\right )}{72 a^{8/3} b^{10/3} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \\ & = \frac {x \left (a+b x^3\right )}{6 a \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 x \left (a+b x^3\right )^2}{18 a^2 \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {5 \left (a+b x^3\right )^3 \tan ^{-1}\left (\frac {\sqrt [3]{a}-2 \sqrt [3]{b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{9 \sqrt {3} a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}+\frac {5 \left (a+b x^3\right )^3 \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )}{27 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}}-\frac {5 \left (a+b x^3\right )^3 \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{54 a^{8/3} \sqrt [3]{b} \left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \\ \end{align*}
Time = 1.05 (sec) , antiderivative size = 235, normalized size of antiderivative = 0.82 \[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=\frac {24 a^{5/3} \sqrt [3]{b} x+15 a^{2/3} b^{4/3} x^4-10 \sqrt {3} \left (a+b x^3\right )^2 \arctan \left (\frac {1-\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a}}}{\sqrt {3}}\right )+10 \left (a+b x^3\right )^2 \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )-5 a^2 \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )-10 a b x^3 \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )-5 b^2 x^6 \log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )}{54 a^{8/3} \sqrt [3]{b} \left (a+b x^3\right ) \sqrt {\left (a+b x^3\right )^2}} \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 1.53 (sec) , antiderivative size = 88, normalized size of antiderivative = 0.31
method | result | size |
risch | \(\frac {\sqrt {\left (b \,x^{3}+a \right )^{2}}\, \left (\frac {5 b \,x^{4}}{18 a^{2}}+\frac {4 x}{9 a}\right )}{\left (b \,x^{3}+a \right )^{3}}+\frac {5 \sqrt {\left (b \,x^{3}+a \right )^{2}}\, \left (\munderset {\textit {\_R} =\operatorname {RootOf}\left (\textit {\_Z}^{3} b +a \right )}{\sum }\frac {\ln \left (x -\textit {\_R} \right )}{\textit {\_R}^{2}}\right )}{27 \left (b \,x^{3}+a \right ) a^{2} b}\) | \(88\) |
default | \(\frac {\left (-10 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (-2 x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right ) b^{2} x^{6}+10 \ln \left (x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right ) b^{2} x^{6}-5 \ln \left (x^{2}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x +\left (\frac {a}{b}\right )^{\frac {2}{3}}\right ) b^{2} x^{6}+15 \left (\frac {a}{b}\right )^{\frac {2}{3}} b^{2} x^{4}-20 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (-2 x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right ) a b \,x^{3}+20 \ln \left (x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right ) a b \,x^{3}-10 \ln \left (x^{2}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x +\left (\frac {a}{b}\right )^{\frac {2}{3}}\right ) a b \,x^{3}+24 \left (\frac {a}{b}\right )^{\frac {2}{3}} a b x -10 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (-2 x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right ) a^{2}+10 \ln \left (x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right ) a^{2}-5 \ln \left (x^{2}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x +\left (\frac {a}{b}\right )^{\frac {2}{3}}\right ) a^{2}\right ) \left (b \,x^{3}+a \right )}{54 \left (\frac {a}{b}\right )^{\frac {2}{3}} b \,a^{2} {\left (\left (b \,x^{3}+a \right )^{2}\right )}^{\frac {3}{2}}}\) | \(299\) |
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Time = 0.29 (sec) , antiderivative size = 499, normalized size of antiderivative = 1.74 \[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=\left [\frac {15 \, a^{2} b^{2} x^{4} + 24 \, a^{3} b x + 15 \, \sqrt {\frac {1}{3}} {\left (a b^{3} x^{6} + 2 \, a^{2} b^{2} x^{3} + a^{3} b\right )} \sqrt {-\frac {\left (a^{2} b\right )^{\frac {1}{3}}}{b}} \log \left (\frac {2 \, a b x^{3} - 3 \, \left (a^{2} b\right )^{\frac {1}{3}} a x - a^{2} + 3 \, \sqrt {\frac {1}{3}} {\left (2 \, a b x^{2} + \left (a^{2} b\right )^{\frac {2}{3}} x - \left (a^{2} b\right )^{\frac {1}{3}} a\right )} \sqrt {-\frac {\left (a^{2} b\right )^{\frac {1}{3}}}{b}}}{b x^{3} + a}\right ) - 5 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (a^{2} b\right )^{\frac {2}{3}} \log \left (a b x^{2} - \left (a^{2} b\right )^{\frac {2}{3}} x + \left (a^{2} b\right )^{\frac {1}{3}} a\right ) + 10 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (a^{2} b\right )^{\frac {2}{3}} \log \left (a b x + \left (a^{2} b\right )^{\frac {2}{3}}\right )}{54 \, {\left (a^{4} b^{3} x^{6} + 2 \, a^{5} b^{2} x^{3} + a^{6} b\right )}}, \frac {15 \, a^{2} b^{2} x^{4} + 24 \, a^{3} b x + 30 \, \sqrt {\frac {1}{3}} {\left (a b^{3} x^{6} + 2 \, a^{2} b^{2} x^{3} + a^{3} b\right )} \sqrt {\frac {\left (a^{2} b\right )^{\frac {1}{3}}}{b}} \arctan \left (\frac {\sqrt {\frac {1}{3}} {\left (2 \, \left (a^{2} b\right )^{\frac {2}{3}} x - \left (a^{2} b\right )^{\frac {1}{3}} a\right )} \sqrt {\frac {\left (a^{2} b\right )^{\frac {1}{3}}}{b}}}{a^{2}}\right ) - 5 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (a^{2} b\right )^{\frac {2}{3}} \log \left (a b x^{2} - \left (a^{2} b\right )^{\frac {2}{3}} x + \left (a^{2} b\right )^{\frac {1}{3}} a\right ) + 10 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (a^{2} b\right )^{\frac {2}{3}} \log \left (a b x + \left (a^{2} b\right )^{\frac {2}{3}}\right )}{54 \, {\left (a^{4} b^{3} x^{6} + 2 \, a^{5} b^{2} x^{3} + a^{6} b\right )}}\right ] \]
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\[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=\int \frac {1}{\left (a^{2} + 2 a b x^{3} + b^{2} x^{6}\right )^{\frac {3}{2}}}\, dx \]
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Time = 0.30 (sec) , antiderivative size = 145, normalized size of antiderivative = 0.51 \[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=\frac {5 \, b x^{4} + 8 \, a x}{18 \, {\left (a^{2} b^{2} x^{6} + 2 \, a^{3} b x^{3} + a^{4}\right )}} + \frac {5 \, \sqrt {3} \arctan \left (\frac {\sqrt {3} {\left (2 \, x - \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{27 \, a^{2} b \left (\frac {a}{b}\right )^{\frac {2}{3}}} - \frac {5 \, \log \left (x^{2} - x \left (\frac {a}{b}\right )^{\frac {1}{3}} + \left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{54 \, a^{2} b \left (\frac {a}{b}\right )^{\frac {2}{3}}} + \frac {5 \, \log \left (x + \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{27 \, a^{2} b \left (\frac {a}{b}\right )^{\frac {2}{3}}} \]
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Time = 0.31 (sec) , antiderivative size = 177, normalized size of antiderivative = 0.62 \[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=-\frac {5 \, \left (-\frac {a}{b}\right )^{\frac {1}{3}} \log \left ({\left | x - \left (-\frac {a}{b}\right )^{\frac {1}{3}} \right |}\right )}{27 \, a^{3} \mathrm {sgn}\left (b x^{3} + a\right )} + \frac {5 \, \sqrt {3} \left (-a b^{2}\right )^{\frac {1}{3}} \arctan \left (\frac {\sqrt {3} {\left (2 \, x + \left (-\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (-\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{27 \, a^{3} b \mathrm {sgn}\left (b x^{3} + a\right )} + \frac {5 \, \left (-a b^{2}\right )^{\frac {1}{3}} \log \left (x^{2} + x \left (-\frac {a}{b}\right )^{\frac {1}{3}} + \left (-\frac {a}{b}\right )^{\frac {2}{3}}\right )}{54 \, a^{3} b \mathrm {sgn}\left (b x^{3} + a\right )} + \frac {5 \, b x^{4} + 8 \, a x}{18 \, {\left (b x^{3} + a\right )}^{2} a^{2} \mathrm {sgn}\left (b x^{3} + a\right )} \]
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Timed out. \[ \int \frac {1}{\left (a^2+2 a b x^3+b^2 x^6\right )^{3/2}} \, dx=\int \frac {1}{{\left (a^2+2\,a\,b\,x^3+b^2\,x^6\right )}^{3/2}} \,d x \]
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