Integrand size = 22, antiderivative size = 110 \[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=\frac {x \left (a-b x^3\right )}{2 \left (a+b x^3\right )^{4/3}}-\frac {x}{2 \sqrt [3]{a+b x^3}}+\frac {\arctan \left (\frac {1+\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a+b x^3}}}{\sqrt {3}}\right )}{\sqrt {3} \sqrt [3]{b}}-\frac {\log \left (-\sqrt [3]{b} x+\sqrt [3]{a+b x^3}\right )}{2 \sqrt [3]{b}} \]
[Out]
Time = 0.03 (sec) , antiderivative size = 110, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {424, 393, 245} \[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=\frac {\arctan \left (\frac {\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a+b x^3}}+1}{\sqrt {3}}\right )}{\sqrt {3} \sqrt [3]{b}}-\frac {x}{2 \sqrt [3]{a+b x^3}}+\frac {x \left (a-b x^3\right )}{2 \left (a+b x^3\right )^{4/3}}-\frac {\log \left (\sqrt [3]{a+b x^3}-\sqrt [3]{b} x\right )}{2 \sqrt [3]{b}} \]
[In]
[Out]
Rule 245
Rule 393
Rule 424
Rubi steps \begin{align*} \text {integral}& = \frac {x \left (a-b x^3\right )}{2 \left (a+b x^3\right )^{4/3}}+\frac {\int \frac {2 a^2 b+4 a b^2 x^3}{\left (a+b x^3\right )^{4/3}} \, dx}{4 a b} \\ & = \frac {x \left (a-b x^3\right )}{2 \left (a+b x^3\right )^{4/3}}-\frac {x}{2 \sqrt [3]{a+b x^3}}+\int \frac {1}{\sqrt [3]{a+b x^3}} \, dx \\ & = \frac {x \left (a-b x^3\right )}{2 \left (a+b x^3\right )^{4/3}}-\frac {x}{2 \sqrt [3]{a+b x^3}}+\frac {\tan ^{-1}\left (\frac {1+\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a+b x^3}}}{\sqrt {3}}\right )}{\sqrt {3} \sqrt [3]{b}}-\frac {\log \left (-\sqrt [3]{b} x+\sqrt [3]{a+b x^3}\right )}{2 \sqrt [3]{b}} \\ \end{align*}
Time = 0.55 (sec) , antiderivative size = 137, normalized size of antiderivative = 1.25 \[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=\frac {-\frac {6 b^{4/3} x^4}{\left (a+b x^3\right )^{4/3}}+2 \sqrt {3} \arctan \left (\frac {\sqrt {3} \sqrt [3]{b} x}{\sqrt [3]{b} x+2 \sqrt [3]{a+b x^3}}\right )-2 \log \left (-\sqrt [3]{b} x+\sqrt [3]{a+b x^3}\right )+\log \left (b^{2/3} x^2+\sqrt [3]{b} x \sqrt [3]{a+b x^3}+\left (a+b x^3\right )^{2/3}\right )}{6 \sqrt [3]{b}} \]
[In]
[Out]
Time = 4.38 (sec) , antiderivative size = 128, normalized size of antiderivative = 1.16
method | result | size |
pseudoelliptic | \(\frac {-6 b^{\frac {4}{3}} x^{4}+\left (b \,x^{3}+a \right )^{\frac {4}{3}} \left (-2 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (b^{\frac {1}{3}} x +2 \left (b \,x^{3}+a \right )^{\frac {1}{3}}\right )}{3 b^{\frac {1}{3}} x}\right )+\ln \left (\frac {b^{\frac {2}{3}} x^{2}+b^{\frac {1}{3}} \left (b \,x^{3}+a \right )^{\frac {1}{3}} x +\left (b \,x^{3}+a \right )^{\frac {2}{3}}}{x^{2}}\right )-2 \ln \left (\frac {-b^{\frac {1}{3}} x +\left (b \,x^{3}+a \right )^{\frac {1}{3}}}{x}\right )\right )}{6 b^{\frac {1}{3}} \left (b \,x^{3}+a \right )^{\frac {4}{3}}}\) | \(128\) |
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 236 vs. \(2 (87) = 174\).
Time = 0.35 (sec) , antiderivative size = 521, normalized size of antiderivative = 4.74 \[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=\left [-\frac {6 \, {\left (b x^{3} + a\right )}^{\frac {2}{3}} b^{2} x^{4} - 3 \, \sqrt {\frac {1}{3}} {\left (b^{3} x^{6} + 2 \, a b^{2} x^{3} + a^{2} b\right )} \sqrt {\frac {\left (-b\right )^{\frac {1}{3}}}{b}} \log \left (3 \, b x^{3} - 3 \, {\left (b x^{3} + a\right )}^{\frac {1}{3}} \left (-b\right )^{\frac {2}{3}} x^{2} - 3 \, \sqrt {\frac {1}{3}} {\left (\left (-b\right )^{\frac {1}{3}} b x^{3} - {\left (b x^{3} + a\right )}^{\frac {1}{3}} b x^{2} + 2 \, {\left (b x^{3} + a\right )}^{\frac {2}{3}} \left (-b\right )^{\frac {2}{3}} x\right )} \sqrt {\frac {\left (-b\right )^{\frac {1}{3}}}{b}} + 2 \, a\right ) + 2 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (-b\right )^{\frac {2}{3}} \log \left (\frac {\left (-b\right )^{\frac {1}{3}} x + {\left (b x^{3} + a\right )}^{\frac {1}{3}}}{x}\right ) - {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (-b\right )^{\frac {2}{3}} \log \left (\frac {\left (-b\right )^{\frac {2}{3}} x^{2} - {\left (b x^{3} + a\right )}^{\frac {1}{3}} \left (-b\right )^{\frac {1}{3}} x + {\left (b x^{3} + a\right )}^{\frac {2}{3}}}{x^{2}}\right )}{6 \, {\left (b^{3} x^{6} + 2 \, a b^{2} x^{3} + a^{2} b\right )}}, -\frac {6 \, {\left (b x^{3} + a\right )}^{\frac {2}{3}} b^{2} x^{4} + 6 \, \sqrt {\frac {1}{3}} {\left (b^{3} x^{6} + 2 \, a b^{2} x^{3} + a^{2} b\right )} \sqrt {-\frac {\left (-b\right )^{\frac {1}{3}}}{b}} \arctan \left (-\frac {\sqrt {\frac {1}{3}} {\left (\left (-b\right )^{\frac {1}{3}} x - 2 \, {\left (b x^{3} + a\right )}^{\frac {1}{3}}\right )} \sqrt {-\frac {\left (-b\right )^{\frac {1}{3}}}{b}}}{x}\right ) + 2 \, {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (-b\right )^{\frac {2}{3}} \log \left (\frac {\left (-b\right )^{\frac {1}{3}} x + {\left (b x^{3} + a\right )}^{\frac {1}{3}}}{x}\right ) - {\left (b^{2} x^{6} + 2 \, a b x^{3} + a^{2}\right )} \left (-b\right )^{\frac {2}{3}} \log \left (\frac {\left (-b\right )^{\frac {2}{3}} x^{2} - {\left (b x^{3} + a\right )}^{\frac {1}{3}} \left (-b\right )^{\frac {1}{3}} x + {\left (b x^{3} + a\right )}^{\frac {2}{3}}}{x^{2}}\right )}{6 \, {\left (b^{3} x^{6} + 2 \, a b^{2} x^{3} + a^{2} b\right )}}\right ] \]
[In]
[Out]
\[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=\int \frac {\left (- a + b x^{3}\right )^{2}}{\left (a + b x^{3}\right )^{\frac {7}{3}}}\, dx \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 180 vs. \(2 (87) = 174\).
Time = 0.28 (sec) , antiderivative size = 180, normalized size of antiderivative = 1.64 \[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=-\frac {{\left (b - \frac {4 \, {\left (b x^{3} + a\right )}}{x^{3}}\right )} x^{4}}{4 \, {\left (b x^{3} + a\right )}^{\frac {4}{3}}} - \frac {b x^{4}}{2 \, {\left (b x^{3} + a\right )}^{\frac {4}{3}}} - \frac {1}{12} \, {\left (\frac {3 \, {\left (b + \frac {4 \, {\left (b x^{3} + a\right )}}{x^{3}}\right )} x^{4}}{{\left (b x^{3} + a\right )}^{\frac {4}{3}} b^{2}} + \frac {4 \, \sqrt {3} \arctan \left (\frac {\sqrt {3} {\left (b^{\frac {1}{3}} + \frac {2 \, {\left (b x^{3} + a\right )}^{\frac {1}{3}}}{x}\right )}}{3 \, b^{\frac {1}{3}}}\right )}{b^{\frac {7}{3}}} - \frac {2 \, \log \left (b^{\frac {2}{3}} + \frac {{\left (b x^{3} + a\right )}^{\frac {1}{3}} b^{\frac {1}{3}}}{x} + \frac {{\left (b x^{3} + a\right )}^{\frac {2}{3}}}{x^{2}}\right )}{b^{\frac {7}{3}}} + \frac {4 \, \log \left (-b^{\frac {1}{3}} + \frac {{\left (b x^{3} + a\right )}^{\frac {1}{3}}}{x}\right )}{b^{\frac {7}{3}}}\right )} b^{2} \]
[In]
[Out]
\[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=\int { \frac {{\left (b x^{3} - a\right )}^{2}}{{\left (b x^{3} + a\right )}^{\frac {7}{3}}} \,d x } \]
[In]
[Out]
Timed out. \[ \int \frac {\left (a-b x^3\right )^2}{\left (a+b x^3\right )^{7/3}} \, dx=\int \frac {{\left (a-b\,x^3\right )}^2}{{\left (b\,x^3+a\right )}^{7/3}} \,d x \]
[In]
[Out]