Integrand size = 36, antiderivative size = 133 \[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=-\frac {4 \left (-b x+a x^4\right )^{3/4}}{9 b x^3}+\frac {2\ 2^{3/4} a^{3/4} \arctan \left (\frac {\sqrt [4]{2} \sqrt [4]{a} \left (-b x+a x^4\right )^{3/4}}{-b+a x^3}\right )}{3 b}+\frac {2\ 2^{3/4} a^{3/4} \text {arctanh}\left (\frac {\sqrt [4]{2} \sqrt [4]{a} \left (-b x+a x^4\right )^{3/4}}{-b+a x^3}\right )}{3 b} \]
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Result contains higher order function than in optimal. Order 5 vs. order 3 in optimal.
Time = 0.24 (sec) , antiderivative size = 56, normalized size of antiderivative = 0.42, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.139, Rules used = {2081, 477, 476, 525, 524} \[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=\frac {4 \left (b-a x^3\right ) \operatorname {Hypergeometric2F1}\left (-\frac {3}{4},1,\frac {1}{4},-\frac {2 a x^3}{b-a x^3}\right )}{9 b x^2 \sqrt [4]{a x^4-b x}} \]
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Rule 476
Rule 477
Rule 524
Rule 525
Rule 2081
Rubi steps \begin{align*} \text {integral}& = \frac {\left (\sqrt [4]{x} \sqrt [4]{-b+a x^3}\right ) \int \frac {\left (-b+a x^3\right )^{3/4}}{x^{13/4} \left (b+a x^3\right )} \, dx}{\sqrt [4]{-b x+a x^4}} \\ & = \frac {\left (4 \sqrt [4]{x} \sqrt [4]{-b+a x^3}\right ) \text {Subst}\left (\int \frac {\left (-b+a x^{12}\right )^{3/4}}{x^{10} \left (b+a x^{12}\right )} \, dx,x,\sqrt [4]{x}\right )}{\sqrt [4]{-b x+a x^4}} \\ & = \frac {\left (4 \sqrt [4]{x} \sqrt [4]{-b+a x^3}\right ) \text {Subst}\left (\int \frac {\left (-b+a x^4\right )^{3/4}}{x^4 \left (b+a x^4\right )} \, dx,x,x^{3/4}\right )}{3 \sqrt [4]{-b x+a x^4}} \\ & = \frac {\left (4 \sqrt [4]{x} \left (-b+a x^3\right )\right ) \text {Subst}\left (\int \frac {\left (1-\frac {a x^4}{b}\right )^{3/4}}{x^4 \left (b+a x^4\right )} \, dx,x,x^{3/4}\right )}{3 \left (1-\frac {a x^3}{b}\right )^{3/4} \sqrt [4]{-b x+a x^4}} \\ & = \frac {4 \left (b-a x^3\right ) \operatorname {Hypergeometric2F1}\left (-\frac {3}{4},1,\frac {1}{4},-\frac {2 a x^3}{b-a x^3}\right )}{9 b x^2 \sqrt [4]{-b x+a x^4}} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 3 in optimal.
Time = 10.04 (sec) , antiderivative size = 78, normalized size of antiderivative = 0.59 \[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=-\frac {4 \left (1+\frac {a x^3}{b}\right )^{3/4} \left (-b x+a x^4\right )^{3/4} \operatorname {Hypergeometric2F1}\left (-\frac {3}{4},-\frac {3}{4},\frac {1}{4},\frac {2 a x^3}{b+a x^3}\right )}{9 b x^3 \left (1-\frac {a x^3}{b}\right )^{3/4}} \]
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Time = 0.50 (sec) , antiderivative size = 122, normalized size of antiderivative = 0.92
method | result | size |
pseudoelliptic | \(-\frac {2 \,2^{\frac {3}{4}} \left (\arctan \left (\frac {{\left (x \left (a \,x^{3}-b \right )\right )}^{\frac {1}{4}} 2^{\frac {3}{4}}}{2 x \,a^{\frac {1}{4}}}\right ) a \,x^{3}-\frac {\ln \left (\frac {x 2^{\frac {1}{4}} a^{\frac {1}{4}}+{\left (x \left (a \,x^{3}-b \right )\right )}^{\frac {1}{4}}}{-x 2^{\frac {1}{4}} a^{\frac {1}{4}}+{\left (x \left (a \,x^{3}-b \right )\right )}^{\frac {1}{4}}}\right ) a \,x^{3}}{2}+\frac {{\left (x \left (a \,x^{3}-b \right )\right )}^{\frac {3}{4}} 2^{\frac {1}{4}} a^{\frac {1}{4}}}{3}\right )}{3 a^{\frac {1}{4}} x^{3} b}\) | \(122\) |
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Result contains complex when optimal does not.
Time = 48.59 (sec) , antiderivative size = 581, normalized size of antiderivative = 4.37 \[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=\frac {3 \cdot 8^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (\frac {4 \, \sqrt {2} {\left (a x^{4} - b x\right )}^{\frac {1}{4}} a b^{2} x^{2} \sqrt {\frac {a^{3}}{b^{4}}} + 8^{\frac {3}{4}} \sqrt {a x^{4} - b x} b^{3} x \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} + 4 \, {\left (a x^{4} - b x\right )}^{\frac {3}{4}} a^{2} + 8^{\frac {1}{4}} {\left (3 \, a^{2} b x^{3} - a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{a x^{3} + b}\right ) + 3 i \cdot 8^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (-\frac {4 \, \sqrt {2} {\left (a x^{4} - b x\right )}^{\frac {1}{4}} a b^{2} x^{2} \sqrt {\frac {a^{3}}{b^{4}}} + i \cdot 8^{\frac {3}{4}} \sqrt {a x^{4} - b x} b^{3} x \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} - 4 \, {\left (a x^{4} - b x\right )}^{\frac {3}{4}} a^{2} + 8^{\frac {1}{4}} {\left (-3 i \, a^{2} b x^{3} + i \, a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{a x^{3} + b}\right ) - 3 i \cdot 8^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (-\frac {4 \, \sqrt {2} {\left (a x^{4} - b x\right )}^{\frac {1}{4}} a b^{2} x^{2} \sqrt {\frac {a^{3}}{b^{4}}} - i \cdot 8^{\frac {3}{4}} \sqrt {a x^{4} - b x} b^{3} x \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} - 4 \, {\left (a x^{4} - b x\right )}^{\frac {3}{4}} a^{2} + 8^{\frac {1}{4}} {\left (3 i \, a^{2} b x^{3} - i \, a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{a x^{3} + b}\right ) - 3 \cdot 8^{\frac {1}{4}} b x^{3} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}} \log \left (\frac {4 \, \sqrt {2} {\left (a x^{4} - b x\right )}^{\frac {1}{4}} a b^{2} x^{2} \sqrt {\frac {a^{3}}{b^{4}}} - 8^{\frac {3}{4}} \sqrt {a x^{4} - b x} b^{3} x \left (\frac {a^{3}}{b^{4}}\right )^{\frac {3}{4}} + 4 \, {\left (a x^{4} - b x\right )}^{\frac {3}{4}} a^{2} - 8^{\frac {1}{4}} {\left (3 \, a^{2} b x^{3} - a b^{2}\right )} \left (\frac {a^{3}}{b^{4}}\right )^{\frac {1}{4}}}{a x^{3} + b}\right ) - 8 \, {\left (a x^{4} - b x\right )}^{\frac {3}{4}}}{18 \, b x^{3}} \]
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\[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=\int \frac {a x^{3} - b}{x^{3} \sqrt [4]{x \left (a x^{3} - b\right )} \left (a x^{3} + b\right )}\, dx \]
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\[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=\int { \frac {a x^{3} - b}{{\left (a x^{4} - b x\right )}^{\frac {1}{4}} {\left (a x^{3} + b\right )} x^{3}} \,d x } \]
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Leaf count of result is larger than twice the leaf count of optimal. 215 vs. \(2 (105) = 210\).
Time = 0.29 (sec) , antiderivative size = 215, normalized size of antiderivative = 1.62 \[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=\frac {2 \cdot 2^{\frac {1}{4}} \left (-a\right )^{\frac {3}{4}} \arctan \left (\frac {2^{\frac {1}{4}} {\left (2^{\frac {3}{4}} \left (-a\right )^{\frac {1}{4}} + 2 \, {\left (a - \frac {b}{x^{3}}\right )}^{\frac {1}{4}}\right )}}{2 \, \left (-a\right )^{\frac {1}{4}}}\right )}{3 \, b} + \frac {2 \cdot 2^{\frac {1}{4}} \left (-a\right )^{\frac {3}{4}} \arctan \left (-\frac {2^{\frac {1}{4}} {\left (2^{\frac {3}{4}} \left (-a\right )^{\frac {1}{4}} - 2 \, {\left (a - \frac {b}{x^{3}}\right )}^{\frac {1}{4}}\right )}}{2 \, \left (-a\right )^{\frac {1}{4}}}\right )}{3 \, b} - \frac {2^{\frac {1}{4}} \left (-a\right )^{\frac {3}{4}} \log \left (2^{\frac {3}{4}} \left (-a\right )^{\frac {1}{4}} {\left (a - \frac {b}{x^{3}}\right )}^{\frac {1}{4}} + \sqrt {2} \sqrt {-a} + \sqrt {a - \frac {b}{x^{3}}}\right )}{3 \, b} + \frac {2^{\frac {1}{4}} \left (-a\right )^{\frac {3}{4}} \log \left (-2^{\frac {3}{4}} \left (-a\right )^{\frac {1}{4}} {\left (a - \frac {b}{x^{3}}\right )}^{\frac {1}{4}} + \sqrt {2} \sqrt {-a} + \sqrt {a - \frac {b}{x^{3}}}\right )}{3 \, b} - \frac {4 \, {\left (a - \frac {b}{x^{3}}\right )}^{\frac {3}{4}}}{9 \, b} \]
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Timed out. \[ \int \frac {-b+a x^3}{x^3 \left (b+a x^3\right ) \sqrt [4]{-b x+a x^4}} \, dx=\int -\frac {b-a\,x^3}{x^3\,{\left (a\,x^4-b\,x\right )}^{1/4}\,\left (a\,x^3+b\right )} \,d x \]
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