Integrand size = 26, antiderivative size = 104 \[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=-\frac {\left (b+a x^4\right )^{3/4}}{6 b x^3}+\frac {a^{3/4} \arctan \left (\frac {\sqrt [4]{a} x}{\sqrt [4]{2} \sqrt [4]{b+a x^4}}\right )}{4\ 2^{3/4} b}+\frac {a^{3/4} \text {arctanh}\left (\frac {\sqrt [4]{a} x}{\sqrt [4]{2} \sqrt [4]{b+a x^4}}\right )}{4\ 2^{3/4} b} \]
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Result contains higher order function than in optimal. Order 5 vs. order 3 in optimal.
Time = 0.04 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.44, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.077, Rules used = {525, 524} \[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=-\frac {\left (a x^4+b\right )^{3/4} \operatorname {Hypergeometric2F1}\left (-\frac {3}{4},1,\frac {1}{4},\frac {a x^4}{2 \left (a x^4+b\right )}\right )}{6 b x^3} \]
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Rule 524
Rule 525
Rubi steps \begin{align*} \text {integral}& = \frac {\left (b+a x^4\right )^{3/4} \int \frac {\left (1+\frac {a x^4}{b}\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx}{\left (1+\frac {a x^4}{b}\right )^{3/4}} \\ & = -\frac {\left (b+a x^4\right )^{3/4} \operatorname {Hypergeometric2F1}\left (-\frac {3}{4},1,\frac {1}{4},\frac {a x^4}{2 \left (b+a x^4\right )}\right )}{6 b x^3} \\ \end{align*}
Time = 0.36 (sec) , antiderivative size = 104, normalized size of antiderivative = 1.00 \[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=-\frac {\left (b+a x^4\right )^{3/4}}{6 b x^3}+\frac {a^{3/4} \arctan \left (\frac {\sqrt [4]{a} x}{\sqrt [4]{2} \sqrt [4]{b+a x^4}}\right )}{4\ 2^{3/4} b}+\frac {a^{3/4} \text {arctanh}\left (\frac {\sqrt [4]{a} x}{\sqrt [4]{2} \sqrt [4]{b+a x^4}}\right )}{4\ 2^{3/4} b} \]
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Time = 0.56 (sec) , antiderivative size = 115, normalized size of antiderivative = 1.11
method | result | size |
pseudoelliptic | \(-\frac {\left (\arctan \left (\frac {2^{\frac {1}{4}} \left (a \,x^{4}+b \right )^{\frac {1}{4}}}{a^{\frac {1}{4}} x}\right ) a \sqrt {2}\, x^{3}-\frac {\ln \left (\frac {-2^{\frac {3}{4}} a^{\frac {1}{4}} x -2 \left (a \,x^{4}+b \right )^{\frac {1}{4}}}{2^{\frac {3}{4}} a^{\frac {1}{4}} x -2 \left (a \,x^{4}+b \right )^{\frac {1}{4}}}\right ) a \sqrt {2}\, x^{3}}{2}+\frac {4 \left (a \,x^{4}+b \right )^{\frac {3}{4}} 2^{\frac {1}{4}} a^{\frac {1}{4}}}{3}\right ) 2^{\frac {3}{4}}}{16 a^{\frac {1}{4}} x^{3} b}\) | \(115\) |
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Result contains complex when optimal does not.
Time = 34.11 (sec) , antiderivative size = 565, normalized size of antiderivative = 5.43 \[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=\frac {3 \, \left (\frac {1}{8}\right )^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (\frac {2 \, \sqrt {\frac {1}{2}} {\left (a x^{4} + b\right )}^{\frac {1}{4}} a b^{2} x^{3} \sqrt {\frac {a^{3}}{b^{4}}} + 8 \, \left (\frac {1}{8}\right )^{\frac {3}{4}} \sqrt {a x^{4} + b} b^{3} x^{2} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} + 2 \, {\left (a x^{4} + b\right )}^{\frac {3}{4}} a^{2} x + \left (\frac {1}{8}\right )^{\frac {1}{4}} {\left (3 \, a^{2} b x^{4} + 2 \, a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{2 \, {\left (a x^{4} + 2 \, b\right )}}\right ) + 3 i \, \left (\frac {1}{8}\right )^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (-\frac {2 \, \sqrt {\frac {1}{2}} {\left (a x^{4} + b\right )}^{\frac {1}{4}} a b^{2} x^{3} \sqrt {\frac {a^{3}}{b^{4}}} + 8 i \, \left (\frac {1}{8}\right )^{\frac {3}{4}} \sqrt {a x^{4} + b} b^{3} x^{2} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} - 2 \, {\left (a x^{4} + b\right )}^{\frac {3}{4}} a^{2} x + \left (\frac {1}{8}\right )^{\frac {1}{4}} {\left (-3 i \, a^{2} b x^{4} - 2 i \, a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{2 \, {\left (a x^{4} + 2 \, b\right )}}\right ) - 3 i \, \left (\frac {1}{8}\right )^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (-\frac {2 \, \sqrt {\frac {1}{2}} {\left (a x^{4} + b\right )}^{\frac {1}{4}} a b^{2} x^{3} \sqrt {\frac {a^{3}}{b^{4}}} - 8 i \, \left (\frac {1}{8}\right )^{\frac {3}{4}} \sqrt {a x^{4} + b} b^{3} x^{2} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} - 2 \, {\left (a x^{4} + b\right )}^{\frac {3}{4}} a^{2} x + \left (\frac {1}{8}\right )^{\frac {1}{4}} {\left (3 i \, a^{2} b x^{4} + 2 i \, a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{2 \, {\left (a x^{4} + 2 \, b\right )}}\right ) - 3 \, \left (\frac {1}{8}\right )^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (\frac {2 \, \sqrt {\frac {1}{2}} {\left (a x^{4} + b\right )}^{\frac {1}{4}} a b^{2} x^{3} \sqrt {\frac {a^{3}}{b^{4}}} - 8 \, \left (\frac {1}{8}\right )^{\frac {3}{4}} \sqrt {a x^{4} + b} b^{3} x^{2} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} + 2 \, {\left (a x^{4} + b\right )}^{\frac {3}{4}} a^{2} x - \left (\frac {1}{8}\right )^{\frac {1}{4}} {\left (3 \, a^{2} b x^{4} + 2 \, a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{2 \, {\left (a x^{4} + 2 \, b\right )}}\right ) - 8 \, {\left (a x^{4} + b\right )}^{\frac {3}{4}}}{48 \, b x^{3}} \]
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\[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=\int \frac {\left (a x^{4} + b\right )^{\frac {3}{4}}}{x^{4} \left (a x^{4} + 2 b\right )}\, dx \]
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\[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=\int { \frac {{\left (a x^{4} + b\right )}^{\frac {3}{4}}}{{\left (a x^{4} + 2 \, b\right )} x^{4}} \,d x } \]
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\[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=\int { \frac {{\left (a x^{4} + b\right )}^{\frac {3}{4}}}{{\left (a x^{4} + 2 \, b\right )} x^{4}} \,d x } \]
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Timed out. \[ \int \frac {\left (b+a x^4\right )^{3/4}}{x^4 \left (2 b+a x^4\right )} \, dx=\int \frac {{\left (a\,x^4+b\right )}^{3/4}}{x^4\,\left (a\,x^4+2\,b\right )} \,d x \]
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