Integrand size = 19, antiderivative size = 332 \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=\frac {d (2 b c-a d) \left (2 b^2 c^2-2 a b c d+a^2 d^2\right ) x}{b^4}+\frac {d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^5}{5 b^3}+\frac {d^3 (4 b c-a d) x^9}{9 b^2}+\frac {d^4 x^{13}}{13 b}-\frac {(b c-a d)^4 \arctan \left (1-\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} b^{17/4}}+\frac {(b c-a d)^4 \arctan \left (1+\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} b^{17/4}}-\frac {(b c-a d)^4 \log \left (\sqrt {a}-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}}+\frac {(b c-a d)^4 \log \left (\sqrt {a}+\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}} \]
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Time = 0.20 (sec) , antiderivative size = 332, normalized size of antiderivative = 1.00, number of steps used = 11, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.368, Rules used = {398, 217, 1179, 642, 1176, 631, 210} \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=-\frac {\arctan \left (1-\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right ) (b c-a d)^4}{2 \sqrt {2} a^{3/4} b^{17/4}}+\frac {\arctan \left (\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}+1\right ) (b c-a d)^4}{2 \sqrt {2} a^{3/4} b^{17/4}}-\frac {(b c-a d)^4 \log \left (-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {a}+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}}+\frac {(b c-a d)^4 \log \left (\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {a}+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}}+\frac {d x (2 b c-a d) \left (a^2 d^2-2 a b c d+2 b^2 c^2\right )}{b^4}+\frac {d^2 x^5 \left (a^2 d^2-4 a b c d+6 b^2 c^2\right )}{5 b^3}+\frac {d^3 x^9 (4 b c-a d)}{9 b^2}+\frac {d^4 x^{13}}{13 b} \]
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Rule 210
Rule 217
Rule 398
Rule 631
Rule 642
Rule 1176
Rule 1179
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {d (2 b c-a d) \left (2 b^2 c^2-2 a b c d+a^2 d^2\right )}{b^4}+\frac {d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^4}{b^3}+\frac {d^3 (4 b c-a d) x^8}{b^2}+\frac {d^4 x^{12}}{b}+\frac {b^4 c^4-4 a b^3 c^3 d+6 a^2 b^2 c^2 d^2-4 a^3 b c d^3+a^4 d^4}{b^4 \left (a+b x^4\right )}\right ) \, dx \\ & = \frac {d (2 b c-a d) \left (2 b^2 c^2-2 a b c d+a^2 d^2\right ) x}{b^4}+\frac {d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^5}{5 b^3}+\frac {d^3 (4 b c-a d) x^9}{9 b^2}+\frac {d^4 x^{13}}{13 b}+\frac {(b c-a d)^4 \int \frac {1}{a+b x^4} \, dx}{b^4} \\ & = \frac {d (2 b c-a d) \left (2 b^2 c^2-2 a b c d+a^2 d^2\right ) x}{b^4}+\frac {d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^5}{5 b^3}+\frac {d^3 (4 b c-a d) x^9}{9 b^2}+\frac {d^4 x^{13}}{13 b}+\frac {(b c-a d)^4 \int \frac {\sqrt {a}-\sqrt {b} x^2}{a+b x^4} \, dx}{2 \sqrt {a} b^4}+\frac {(b c-a d)^4 \int \frac {\sqrt {a}+\sqrt {b} x^2}{a+b x^4} \, dx}{2 \sqrt {a} b^4} \\ & = \frac {d (2 b c-a d) \left (2 b^2 c^2-2 a b c d+a^2 d^2\right ) x}{b^4}+\frac {d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^5}{5 b^3}+\frac {d^3 (4 b c-a d) x^9}{9 b^2}+\frac {d^4 x^{13}}{13 b}+\frac {(b c-a d)^4 \int \frac {1}{\frac {\sqrt {a}}{\sqrt {b}}-\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}+x^2} \, dx}{4 \sqrt {a} b^{9/2}}+\frac {(b c-a d)^4 \int \frac {1}{\frac {\sqrt {a}}{\sqrt {b}}+\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}+x^2} \, dx}{4 \sqrt {a} b^{9/2}}-\frac {(b c-a d)^4 \int \frac {\frac {\sqrt {2} \sqrt [4]{a}}{\sqrt [4]{b}}+2 x}{-\frac {\sqrt {a}}{\sqrt {b}}-\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}-x^2} \, dx}{4 \sqrt {2} a^{3/4} b^{17/4}}-\frac {(b c-a d)^4 \int \frac {\frac {\sqrt {2} \sqrt [4]{a}}{\sqrt [4]{b}}-2 x}{-\frac {\sqrt {a}}{\sqrt {b}}+\frac {\sqrt {2} \sqrt [4]{a} x}{\sqrt [4]{b}}-x^2} \, dx}{4 \sqrt {2} a^{3/4} b^{17/4}} \\ & = \frac {d (2 b c-a d) \left (2 b^2 c^2-2 a b c d+a^2 d^2\right ) x}{b^4}+\frac {d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^5}{5 b^3}+\frac {d^3 (4 b c-a d) x^9}{9 b^2}+\frac {d^4 x^{13}}{13 b}-\frac {(b c-a d)^4 \log \left (\sqrt {a}-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}}+\frac {(b c-a d)^4 \log \left (\sqrt {a}+\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}}+\frac {(b c-a d)^4 \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1-\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} b^{17/4}}-\frac {(b c-a d)^4 \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1+\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} b^{17/4}} \\ & = \frac {d (2 b c-a d) \left (2 b^2 c^2-2 a b c d+a^2 d^2\right ) x}{b^4}+\frac {d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^5}{5 b^3}+\frac {d^3 (4 b c-a d) x^9}{9 b^2}+\frac {d^4 x^{13}}{13 b}-\frac {(b c-a d)^4 \tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} b^{17/4}}+\frac {(b c-a d)^4 \tan ^{-1}\left (1+\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{2 \sqrt {2} a^{3/4} b^{17/4}}-\frac {(b c-a d)^4 \log \left (\sqrt {a}-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}}+\frac {(b c-a d)^4 \log \left (\sqrt {a}+\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{4 \sqrt {2} a^{3/4} b^{17/4}} \\ \end{align*}
Time = 0.21 (sec) , antiderivative size = 322, normalized size of antiderivative = 0.97 \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=\frac {4680 \sqrt [4]{b} d \left (4 b^3 c^3-6 a b^2 c^2 d+4 a^2 b c d^2-a^3 d^3\right ) x+936 b^{5/4} d^2 \left (6 b^2 c^2-4 a b c d+a^2 d^2\right ) x^5+520 b^{9/4} d^3 (4 b c-a d) x^9+360 b^{13/4} d^4 x^{13}-\frac {1170 \sqrt {2} (b c-a d)^4 \arctan \left (1-\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{a^{3/4}}+\frac {1170 \sqrt {2} (b c-a d)^4 \arctan \left (1+\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{a}}\right )}{a^{3/4}}-\frac {585 \sqrt {2} (b c-a d)^4 \log \left (\sqrt {a}-\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{a^{3/4}}+\frac {585 \sqrt {2} (b c-a d)^4 \log \left (\sqrt {a}+\sqrt {2} \sqrt [4]{a} \sqrt [4]{b} x+\sqrt {b} x^2\right )}{a^{3/4}}}{4680 b^{17/4}} \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 4.20 (sec) , antiderivative size = 201, normalized size of antiderivative = 0.61
method | result | size |
risch | \(\frac {d^{4} x^{13}}{13 b}-\frac {d^{4} x^{9} a}{9 b^{2}}+\frac {4 d^{3} x^{9} c}{9 b}-\frac {4 d^{3} a c \,x^{5}}{5 b^{2}}+\frac {6 d^{2} c^{2} x^{5}}{5 b}+\frac {d^{4} a^{2} x^{5}}{5 b^{3}}-\frac {d^{4} a^{3} x}{b^{4}}+\frac {4 d^{3} a^{2} c x}{b^{3}}-\frac {6 d^{2} a \,c^{2} x}{b^{2}}+\frac {4 d \,c^{3} x}{b}+\frac {\munderset {\textit {\_R} =\operatorname {RootOf}\left (b \,\textit {\_Z}^{4}+a \right )}{\sum }\frac {\left (a^{4} d^{4}-4 a^{3} b c \,d^{3}+6 a^{2} b^{2} c^{2} d^{2}-4 a \,b^{3} c^{3} d +b^{4} c^{4}\right ) \ln \left (x -\textit {\_R} \right )}{\textit {\_R}^{3}}}{4 b^{5}}\) | \(201\) |
default | \(-\frac {d \left (-\frac {b^{3} d^{3} x^{13}}{13}+\frac {\left (\left (a d -2 b c \right ) b^{2} d^{2}-2 b^{3} c \,d^{2}\right ) x^{9}}{9}+\frac {\left (2 \left (a d -2 b c \right ) b^{2} c d -b d \left (a^{2} d^{2}-2 a b c d +2 b^{2} c^{2}\right )\right ) x^{5}}{5}+\left (a d -2 b c \right ) \left (a^{2} d^{2}-2 a b c d +2 b^{2} c^{2}\right ) x \right )}{b^{4}}+\frac {\left (a^{4} d^{4}-4 a^{3} b c \,d^{3}+6 a^{2} b^{2} c^{2} d^{2}-4 a \,b^{3} c^{3} d +b^{4} c^{4}\right ) \left (\frac {a}{b}\right )^{\frac {1}{4}} \sqrt {2}\, \left (\ln \left (\frac {x^{2}+\left (\frac {a}{b}\right )^{\frac {1}{4}} x \sqrt {2}+\sqrt {\frac {a}{b}}}{x^{2}-\left (\frac {a}{b}\right )^{\frac {1}{4}} x \sqrt {2}+\sqrt {\frac {a}{b}}}\right )+2 \arctan \left (\frac {\sqrt {2}\, x}{\left (\frac {a}{b}\right )^{\frac {1}{4}}}+1\right )+2 \arctan \left (\frac {\sqrt {2}\, x}{\left (\frac {a}{b}\right )^{\frac {1}{4}}}-1\right )\right )}{8 b^{4} a}\) | \(282\) |
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Result contains complex when optimal does not.
Time = 0.30 (sec) , antiderivative size = 2190, normalized size of antiderivative = 6.60 \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=\text {Too large to display} \]
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Time = 22.35 (sec) , antiderivative size = 435, normalized size of antiderivative = 1.31 \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=x^{9} \left (- \frac {a d^{4}}{9 b^{2}} + \frac {4 c d^{3}}{9 b}\right ) + x^{5} \left (\frac {a^{2} d^{4}}{5 b^{3}} - \frac {4 a c d^{3}}{5 b^{2}} + \frac {6 c^{2} d^{2}}{5 b}\right ) + x \left (- \frac {a^{3} d^{4}}{b^{4}} + \frac {4 a^{2} c d^{3}}{b^{3}} - \frac {6 a c^{2} d^{2}}{b^{2}} + \frac {4 c^{3} d}{b}\right ) + \operatorname {RootSum} {\left (256 t^{4} a^{3} b^{17} + a^{16} d^{16} - 16 a^{15} b c d^{15} + 120 a^{14} b^{2} c^{2} d^{14} - 560 a^{13} b^{3} c^{3} d^{13} + 1820 a^{12} b^{4} c^{4} d^{12} - 4368 a^{11} b^{5} c^{5} d^{11} + 8008 a^{10} b^{6} c^{6} d^{10} - 11440 a^{9} b^{7} c^{7} d^{9} + 12870 a^{8} b^{8} c^{8} d^{8} - 11440 a^{7} b^{9} c^{9} d^{7} + 8008 a^{6} b^{10} c^{10} d^{6} - 4368 a^{5} b^{11} c^{11} d^{5} + 1820 a^{4} b^{12} c^{12} d^{4} - 560 a^{3} b^{13} c^{13} d^{3} + 120 a^{2} b^{14} c^{14} d^{2} - 16 a b^{15} c^{15} d + b^{16} c^{16}, \left ( t \mapsto t \log {\left (\frac {4 t a b^{4}}{a^{4} d^{4} - 4 a^{3} b c d^{3} + 6 a^{2} b^{2} c^{2} d^{2} - 4 a b^{3} c^{3} d + b^{4} c^{4}} + x \right )} \right )\right )} + \frac {d^{4} x^{13}}{13 b} \]
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none
Time = 0.28 (sec) , antiderivative size = 489, normalized size of antiderivative = 1.47 \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=\frac {45 \, b^{3} d^{4} x^{13} + 65 \, {\left (4 \, b^{3} c d^{3} - a b^{2} d^{4}\right )} x^{9} + 117 \, {\left (6 \, b^{3} c^{2} d^{2} - 4 \, a b^{2} c d^{3} + a^{2} b d^{4}\right )} x^{5} + 585 \, {\left (4 \, b^{3} c^{3} d - 6 \, a b^{2} c^{2} d^{2} + 4 \, a^{2} b c d^{3} - a^{3} d^{4}\right )} x}{585 \, b^{4}} + \frac {\frac {2 \, \sqrt {2} {\left (b^{4} c^{4} - 4 \, a b^{3} c^{3} d + 6 \, a^{2} b^{2} c^{2} d^{2} - 4 \, a^{3} b c d^{3} + a^{4} d^{4}\right )} \arctan \left (\frac {\sqrt {2} {\left (2 \, \sqrt {b} x + \sqrt {2} a^{\frac {1}{4}} b^{\frac {1}{4}}\right )}}{2 \, \sqrt {\sqrt {a} \sqrt {b}}}\right )}{\sqrt {a} \sqrt {\sqrt {a} \sqrt {b}}} + \frac {2 \, \sqrt {2} {\left (b^{4} c^{4} - 4 \, a b^{3} c^{3} d + 6 \, a^{2} b^{2} c^{2} d^{2} - 4 \, a^{3} b c d^{3} + a^{4} d^{4}\right )} \arctan \left (\frac {\sqrt {2} {\left (2 \, \sqrt {b} x - \sqrt {2} a^{\frac {1}{4}} b^{\frac {1}{4}}\right )}}{2 \, \sqrt {\sqrt {a} \sqrt {b}}}\right )}{\sqrt {a} \sqrt {\sqrt {a} \sqrt {b}}} + \frac {\sqrt {2} {\left (b^{4} c^{4} - 4 \, a b^{3} c^{3} d + 6 \, a^{2} b^{2} c^{2} d^{2} - 4 \, a^{3} b c d^{3} + a^{4} d^{4}\right )} \log \left (\sqrt {b} x^{2} + \sqrt {2} a^{\frac {1}{4}} b^{\frac {1}{4}} x + \sqrt {a}\right )}{a^{\frac {3}{4}} b^{\frac {1}{4}}} - \frac {\sqrt {2} {\left (b^{4} c^{4} - 4 \, a b^{3} c^{3} d + 6 \, a^{2} b^{2} c^{2} d^{2} - 4 \, a^{3} b c d^{3} + a^{4} d^{4}\right )} \log \left (\sqrt {b} x^{2} - \sqrt {2} a^{\frac {1}{4}} b^{\frac {1}{4}} x + \sqrt {a}\right )}{a^{\frac {3}{4}} b^{\frac {1}{4}}}}{8 \, b^{4}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 617 vs. \(2 (261) = 522\).
Time = 0.29 (sec) , antiderivative size = 617, normalized size of antiderivative = 1.86 \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=\frac {\sqrt {2} {\left (\left (a b^{3}\right )^{\frac {1}{4}} b^{4} c^{4} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a b^{3} c^{3} d + 6 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{2} b^{2} c^{2} d^{2} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{3} b c d^{3} + \left (a b^{3}\right )^{\frac {1}{4}} a^{4} d^{4}\right )} \arctan \left (\frac {\sqrt {2} {\left (2 \, x + \sqrt {2} \left (\frac {a}{b}\right )^{\frac {1}{4}}\right )}}{2 \, \left (\frac {a}{b}\right )^{\frac {1}{4}}}\right )}{4 \, a b^{5}} + \frac {\sqrt {2} {\left (\left (a b^{3}\right )^{\frac {1}{4}} b^{4} c^{4} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a b^{3} c^{3} d + 6 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{2} b^{2} c^{2} d^{2} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{3} b c d^{3} + \left (a b^{3}\right )^{\frac {1}{4}} a^{4} d^{4}\right )} \arctan \left (\frac {\sqrt {2} {\left (2 \, x - \sqrt {2} \left (\frac {a}{b}\right )^{\frac {1}{4}}\right )}}{2 \, \left (\frac {a}{b}\right )^{\frac {1}{4}}}\right )}{4 \, a b^{5}} + \frac {\sqrt {2} {\left (\left (a b^{3}\right )^{\frac {1}{4}} b^{4} c^{4} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a b^{3} c^{3} d + 6 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{2} b^{2} c^{2} d^{2} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{3} b c d^{3} + \left (a b^{3}\right )^{\frac {1}{4}} a^{4} d^{4}\right )} \log \left (x^{2} + \sqrt {2} x \left (\frac {a}{b}\right )^{\frac {1}{4}} + \sqrt {\frac {a}{b}}\right )}{8 \, a b^{5}} - \frac {\sqrt {2} {\left (\left (a b^{3}\right )^{\frac {1}{4}} b^{4} c^{4} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a b^{3} c^{3} d + 6 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{2} b^{2} c^{2} d^{2} - 4 \, \left (a b^{3}\right )^{\frac {1}{4}} a^{3} b c d^{3} + \left (a b^{3}\right )^{\frac {1}{4}} a^{4} d^{4}\right )} \log \left (x^{2} - \sqrt {2} x \left (\frac {a}{b}\right )^{\frac {1}{4}} + \sqrt {\frac {a}{b}}\right )}{8 \, a b^{5}} + \frac {45 \, b^{12} d^{4} x^{13} + 260 \, b^{12} c d^{3} x^{9} - 65 \, a b^{11} d^{4} x^{9} + 702 \, b^{12} c^{2} d^{2} x^{5} - 468 \, a b^{11} c d^{3} x^{5} + 117 \, a^{2} b^{10} d^{4} x^{5} + 2340 \, b^{12} c^{3} d x - 3510 \, a b^{11} c^{2} d^{2} x + 2340 \, a^{2} b^{10} c d^{3} x - 585 \, a^{3} b^{9} d^{4} x}{585 \, b^{13}} \]
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Time = 5.75 (sec) , antiderivative size = 1822, normalized size of antiderivative = 5.49 \[ \int \frac {\left (c+d x^4\right )^4}{a+b x^4} \, dx=\text {Too large to display} \]
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