Integrand size = 36, antiderivative size = 41 \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=\frac {2 B \arctan \left (\frac {\sqrt [3]{a}+2 \sqrt [3]{-b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} \sqrt [3]{a}} \]
[Out]
Time = 0.03 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.083, Rules used = {1600, 631, 210} \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=\frac {2 B \arctan \left (\frac {\sqrt [3]{a}+2 \sqrt [3]{-b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} \sqrt [3]{a}} \]
[In]
[Out]
Rule 210
Rule 631
Rule 1600
Rubi steps \begin{align*} \text {integral}& = \int \frac {1}{-\frac {a^{2/3} (-b)^{2/3}}{b B}+\frac {\sqrt [3]{a} x}{B}+\frac {\sqrt [3]{-b} x^2}{B}} \, dx \\ & = -\frac {(2 B) \text {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1+\frac {2 \sqrt [3]{-b} x}{\sqrt [3]{a}}\right )}{\sqrt [3]{a}} \\ & = \frac {2 B \tan ^{-1}\left (\frac {\sqrt [3]{a}+2 \sqrt [3]{-b} x}{\sqrt {3} \sqrt [3]{a}}\right )}{\sqrt {3} \sqrt [3]{a}} \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(129\) vs. \(2(41)=82\).
Time = 0.06 (sec) , antiderivative size = 129, normalized size of antiderivative = 3.15 \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=\frac {\sqrt [3]{-b} B \left (2 \sqrt {3} \left (\sqrt [3]{-b}-\sqrt [3]{b}\right ) \arctan \left (\frac {1-\frac {2 \sqrt [3]{b} x}{\sqrt [3]{a}}}{\sqrt {3}}\right )+\left (\sqrt [3]{-b}+\sqrt [3]{b}\right ) \left (2 \log \left (\sqrt [3]{a}+\sqrt [3]{b} x\right )-\log \left (a^{2/3}-\sqrt [3]{a} \sqrt [3]{b} x+b^{2/3} x^2\right )\right )\right )}{6 \sqrt [3]{a} b^{2/3}} \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. \(201\) vs. \(2(30)=60\).
Time = 1.52 (sec) , antiderivative size = 202, normalized size of antiderivative = 4.93
method | result | size |
default | \(-B \,b^{\frac {1}{3}} \left (-a^{\frac {1}{3}} \left (\frac {\ln \left (x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 b \left (\frac {a}{b}\right )^{\frac {2}{3}}}-\frac {\ln \left (x^{2}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x +\left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{6 b \left (\frac {a}{b}\right )^{\frac {2}{3}}}+\frac {\sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (\frac {2 x}{\left (\frac {a}{b}\right )^{\frac {1}{3}}}-1\right )}{3}\right )}{3 b \left (\frac {a}{b}\right )^{\frac {2}{3}}}\right )+\left (-b \right )^{\frac {1}{3}} \left (-\frac {\ln \left (x +\left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}+\frac {\ln \left (x^{2}-\left (\frac {a}{b}\right )^{\frac {1}{3}} x +\left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{6 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}+\frac {\sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, \left (\frac {2 x}{\left (\frac {a}{b}\right )^{\frac {1}{3}}}-1\right )}{3}\right )}{3 b \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )\right ) \left (-1\right )^{\frac {1}{3}}\) | \(202\) |
[In]
[Out]
none
Time = 0.46 (sec) , antiderivative size = 114, normalized size of antiderivative = 2.78 \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=\left [\sqrt {\frac {1}{3}} B \sqrt {-\frac {1}{a^{\frac {2}{3}}}} \log \left (\frac {2 \, b x^{3} + 3 \, a^{\frac {2}{3}} \left (-b\right )^{\frac {1}{3}} x - 3 \, \sqrt {\frac {1}{3}} {\left (2 \, a^{\frac {2}{3}} \left (-b\right )^{\frac {2}{3}} x^{2} - a \left (-b\right )^{\frac {1}{3}} x - a^{\frac {4}{3}}\right )} \sqrt {-\frac {1}{a^{\frac {2}{3}}}} - a}{b x^{3} + a}\right ), \frac {2 \, \sqrt {\frac {1}{3}} B \arctan \left (\frac {\sqrt {\frac {1}{3}} {\left (2 \, \left (-b\right )^{\frac {1}{3}} x + a^{\frac {1}{3}}\right )}}{a^{\frac {1}{3}}}\right )}{a^{\frac {1}{3}}}\right ] \]
[In]
[Out]
Result contains complex when optimal does not.
Time = 0.15 (sec) , antiderivative size = 105, normalized size of antiderivative = 2.56 \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=- \frac {B \left (- \frac {\sqrt {3} i \log {\left (- \frac {\sqrt [3]{a} \left (- b\right )^{\frac {2}{3}}}{2 b} - \frac {\sqrt {3} i \sqrt [3]{a} \left (- b\right )^{\frac {2}{3}}}{2 b} + x \right )}}{3} + \frac {\sqrt {3} i \log {\left (- \frac {\sqrt [3]{a} \left (- b\right )^{\frac {2}{3}}}{2 b} + \frac {\sqrt {3} i \sqrt [3]{a} \left (- b\right )^{\frac {2}{3}}}{2 b} + x \right )}}{3}\right )}{\sqrt [3]{a}} \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 174 vs. \(2 (30) = 60\).
Time = 0.28 (sec) , antiderivative size = 174, normalized size of antiderivative = 4.24 \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=-\frac {\sqrt {3} {\left (B \left (-b\right )^{\frac {2}{3}} \left (\frac {a}{b}\right )^{\frac {1}{3}} - B a^{\frac {1}{3}} \left (-b\right )^{\frac {1}{3}}\right )} \arctan \left (\frac {\sqrt {3} {\left (2 \, x - \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}}{3 \, \left (\frac {a}{b}\right )^{\frac {1}{3}}}\right )}{3 \, b \left (\frac {a}{b}\right )^{\frac {2}{3}}} - \frac {{\left (B \left (-b\right )^{\frac {2}{3}} \left (\frac {a}{b}\right )^{\frac {1}{3}} + B a^{\frac {1}{3}} \left (-b\right )^{\frac {1}{3}}\right )} \log \left (x^{2} - x \left (\frac {a}{b}\right )^{\frac {1}{3}} + \left (\frac {a}{b}\right )^{\frac {2}{3}}\right )}{6 \, b \left (\frac {a}{b}\right )^{\frac {2}{3}}} + \frac {{\left (B \left (-b\right )^{\frac {2}{3}} \left (\frac {a}{b}\right )^{\frac {1}{3}} + B a^{\frac {1}{3}} \left (-b\right )^{\frac {1}{3}}\right )} \log \left (x + \left (\frac {a}{b}\right )^{\frac {1}{3}}\right )}{3 \, b \left (\frac {a}{b}\right )^{\frac {2}{3}}} \]
[In]
[Out]
none
Time = 0.28 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.39 \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=-\frac {2 \, \sqrt {3} B \left (-b\right )^{\frac {1}{3}} \arctan \left (-\frac {\sqrt {3} {\left (2 \, \left (-b\right )^{\frac {2}{3}} x + a^{\frac {1}{3}} \left (-b\right )^{\frac {1}{3}}\right )}}{3 \, \sqrt {a^{\frac {2}{3}} \left (-b\right )^{\frac {2}{3}}}}\right )}{3 \, \sqrt {a^{\frac {2}{3}} \left (-b\right )^{\frac {2}{3}}}} \]
[In]
[Out]
Time = 0.24 (sec) , antiderivative size = 49, normalized size of antiderivative = 1.20 \[ \int \frac {\sqrt [3]{a} \sqrt [3]{-b} B-(-b)^{2/3} B x}{a+b x^3} \, dx=-\frac {2\,\sqrt {3}\,B\,\sqrt {-b}\,\mathrm {atanh}\left (\frac {\sqrt {3}\,\sqrt {-b}}{3\,\sqrt {b}}-\frac {2\,\sqrt {3}\,\sqrt {b}\,x}{3\,a^{1/3}\,{\left (-b\right )}^{1/6}}\right )}{3\,a^{1/3}\,\sqrt {b}} \]
[In]
[Out]