Integrand size = 19, antiderivative size = 251 \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=-\frac {45}{16 b^3 \sqrt {x}}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}+\frac {45 \sqrt [4]{c} \arctan \left (1-\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}\right )}{32 \sqrt {2} b^{13/4}}-\frac {45 \sqrt [4]{c} \arctan \left (1+\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}\right )}{32 \sqrt {2} b^{13/4}}-\frac {45 \sqrt [4]{c} \log \left (\sqrt {b}-\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}}+\frac {45 \sqrt [4]{c} \log \left (\sqrt {b}+\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}} \]
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Time = 0.14 (sec) , antiderivative size = 251, normalized size of antiderivative = 1.00, number of steps used = 14, number of rules used = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.526, Rules used = {1598, 296, 331, 335, 303, 1176, 631, 210, 1179, 642} \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=\frac {45 \sqrt [4]{c} \arctan \left (1-\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}\right )}{32 \sqrt {2} b^{13/4}}-\frac {45 \sqrt [4]{c} \arctan \left (\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}+1\right )}{32 \sqrt {2} b^{13/4}}-\frac {45 \sqrt [4]{c} \log \left (-\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {b}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}}+\frac {45 \sqrt [4]{c} \log \left (\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {b}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}}-\frac {45}{16 b^3 \sqrt {x}}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2} \]
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Rule 210
Rule 296
Rule 303
Rule 331
Rule 335
Rule 631
Rule 642
Rule 1176
Rule 1179
Rule 1598
Rubi steps \begin{align*} \text {integral}& = \int \frac {1}{x^{3/2} \left (b+c x^2\right )^3} \, dx \\ & = \frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9 \int \frac {1}{x^{3/2} \left (b+c x^2\right )^2} \, dx}{8 b} \\ & = \frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}+\frac {45 \int \frac {1}{x^{3/2} \left (b+c x^2\right )} \, dx}{32 b^2} \\ & = -\frac {45}{16 b^3 \sqrt {x}}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}-\frac {(45 c) \int \frac {\sqrt {x}}{b+c x^2} \, dx}{32 b^3} \\ & = -\frac {45}{16 b^3 \sqrt {x}}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}-\frac {(45 c) \text {Subst}\left (\int \frac {x^2}{b+c x^4} \, dx,x,\sqrt {x}\right )}{16 b^3} \\ & = -\frac {45}{16 b^3 \sqrt {x}}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}+\frac {\left (45 \sqrt {c}\right ) \text {Subst}\left (\int \frac {\sqrt {b}-\sqrt {c} x^2}{b+c x^4} \, dx,x,\sqrt {x}\right )}{32 b^3}-\frac {\left (45 \sqrt {c}\right ) \text {Subst}\left (\int \frac {\sqrt {b}+\sqrt {c} x^2}{b+c x^4} \, dx,x,\sqrt {x}\right )}{32 b^3} \\ & = -\frac {45}{16 b^3 \sqrt {x}}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}-\frac {45 \text {Subst}\left (\int \frac {1}{\frac {\sqrt {b}}{\sqrt {c}}-\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{c}}+x^2} \, dx,x,\sqrt {x}\right )}{64 b^3}-\frac {45 \text {Subst}\left (\int \frac {1}{\frac {\sqrt {b}}{\sqrt {c}}+\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{c}}+x^2} \, dx,x,\sqrt {x}\right )}{64 b^3}-\frac {\left (45 \sqrt [4]{c}\right ) \text {Subst}\left (\int \frac {\frac {\sqrt {2} \sqrt [4]{b}}{\sqrt [4]{c}}+2 x}{-\frac {\sqrt {b}}{\sqrt {c}}-\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{c}}-x^2} \, dx,x,\sqrt {x}\right )}{64 \sqrt {2} b^{13/4}}-\frac {\left (45 \sqrt [4]{c}\right ) \text {Subst}\left (\int \frac {\frac {\sqrt {2} \sqrt [4]{b}}{\sqrt [4]{c}}-2 x}{-\frac {\sqrt {b}}{\sqrt {c}}+\frac {\sqrt {2} \sqrt [4]{b} x}{\sqrt [4]{c}}-x^2} \, dx,x,\sqrt {x}\right )}{64 \sqrt {2} b^{13/4}} \\ & = -\frac {45}{16 b^3 \sqrt {x}}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}-\frac {45 \sqrt [4]{c} \log \left (\sqrt {b}-\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}}+\frac {45 \sqrt [4]{c} \log \left (\sqrt {b}+\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}}-\frac {\left (45 \sqrt [4]{c}\right ) \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1-\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}\right )}{32 \sqrt {2} b^{13/4}}+\frac {\left (45 \sqrt [4]{c}\right ) \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1+\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}\right )}{32 \sqrt {2} b^{13/4}} \\ & = -\frac {45}{16 b^3 \sqrt {x}}+\frac {1}{4 b \sqrt {x} \left (b+c x^2\right )^2}+\frac {9}{16 b^2 \sqrt {x} \left (b+c x^2\right )}+\frac {45 \sqrt [4]{c} \tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}\right )}{32 \sqrt {2} b^{13/4}}-\frac {45 \sqrt [4]{c} \tan ^{-1}\left (1+\frac {\sqrt {2} \sqrt [4]{c} \sqrt {x}}{\sqrt [4]{b}}\right )}{32 \sqrt {2} b^{13/4}}-\frac {45 \sqrt [4]{c} \log \left (\sqrt {b}-\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}}+\frac {45 \sqrt [4]{c} \log \left (\sqrt {b}+\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}+\sqrt {c} x\right )}{64 \sqrt {2} b^{13/4}} \\ \end{align*}
Time = 0.39 (sec) , antiderivative size = 149, normalized size of antiderivative = 0.59 \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=\frac {-\frac {4 \sqrt [4]{b} \left (32 b^2+81 b c x^2+45 c^2 x^4\right )}{\sqrt {x} \left (b+c x^2\right )^2}+45 \sqrt {2} \sqrt [4]{c} \arctan \left (\frac {\sqrt {b}-\sqrt {c} x}{\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}}\right )+45 \sqrt {2} \sqrt [4]{c} \text {arctanh}\left (\frac {\sqrt {2} \sqrt [4]{b} \sqrt [4]{c} \sqrt {x}}{\sqrt {b}+\sqrt {c} x}\right )}{64 b^{13/4}} \]
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Time = 0.15 (sec) , antiderivative size = 145, normalized size of antiderivative = 0.58
method | result | size |
derivativedivides | \(-\frac {2}{b^{3} \sqrt {x}}-\frac {2 c \left (\frac {\frac {13 c \,x^{\frac {7}{2}}}{32}+\frac {17 b \,x^{\frac {3}{2}}}{32}}{\left (c \,x^{2}+b \right )^{2}}+\frac {45 \sqrt {2}\, \left (\ln \left (\frac {x -\left (\frac {b}{c}\right )^{\frac {1}{4}} \sqrt {x}\, \sqrt {2}+\sqrt {\frac {b}{c}}}{x +\left (\frac {b}{c}\right )^{\frac {1}{4}} \sqrt {x}\, \sqrt {2}+\sqrt {\frac {b}{c}}}\right )+2 \arctan \left (\frac {\sqrt {2}\, \sqrt {x}}{\left (\frac {b}{c}\right )^{\frac {1}{4}}}+1\right )+2 \arctan \left (\frac {\sqrt {2}\, \sqrt {x}}{\left (\frac {b}{c}\right )^{\frac {1}{4}}}-1\right )\right )}{256 c \left (\frac {b}{c}\right )^{\frac {1}{4}}}\right )}{b^{3}}\) | \(145\) |
default | \(-\frac {2}{b^{3} \sqrt {x}}-\frac {2 c \left (\frac {\frac {13 c \,x^{\frac {7}{2}}}{32}+\frac {17 b \,x^{\frac {3}{2}}}{32}}{\left (c \,x^{2}+b \right )^{2}}+\frac {45 \sqrt {2}\, \left (\ln \left (\frac {x -\left (\frac {b}{c}\right )^{\frac {1}{4}} \sqrt {x}\, \sqrt {2}+\sqrt {\frac {b}{c}}}{x +\left (\frac {b}{c}\right )^{\frac {1}{4}} \sqrt {x}\, \sqrt {2}+\sqrt {\frac {b}{c}}}\right )+2 \arctan \left (\frac {\sqrt {2}\, \sqrt {x}}{\left (\frac {b}{c}\right )^{\frac {1}{4}}}+1\right )+2 \arctan \left (\frac {\sqrt {2}\, \sqrt {x}}{\left (\frac {b}{c}\right )^{\frac {1}{4}}}-1\right )\right )}{256 c \left (\frac {b}{c}\right )^{\frac {1}{4}}}\right )}{b^{3}}\) | \(145\) |
risch | \(-\frac {2}{b^{3} \sqrt {x}}-\frac {c \left (\frac {\frac {13 c \,x^{\frac {7}{2}}}{16}+\frac {17 b \,x^{\frac {3}{2}}}{16}}{\left (c \,x^{2}+b \right )^{2}}+\frac {45 \sqrt {2}\, \left (\ln \left (\frac {x -\left (\frac {b}{c}\right )^{\frac {1}{4}} \sqrt {x}\, \sqrt {2}+\sqrt {\frac {b}{c}}}{x +\left (\frac {b}{c}\right )^{\frac {1}{4}} \sqrt {x}\, \sqrt {2}+\sqrt {\frac {b}{c}}}\right )+2 \arctan \left (\frac {\sqrt {2}\, \sqrt {x}}{\left (\frac {b}{c}\right )^{\frac {1}{4}}}+1\right )+2 \arctan \left (\frac {\sqrt {2}\, \sqrt {x}}{\left (\frac {b}{c}\right )^{\frac {1}{4}}}-1\right )\right )}{128 c \left (\frac {b}{c}\right )^{\frac {1}{4}}}\right )}{b^{3}}\) | \(146\) |
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Result contains complex when optimal does not.
Time = 0.25 (sec) , antiderivative size = 284, normalized size of antiderivative = 1.13 \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=-\frac {45 \, {\left (b^{3} c^{2} x^{5} + 2 \, b^{4} c x^{3} + b^{5} x\right )} \left (-\frac {c}{b^{13}}\right )^{\frac {1}{4}} \log \left (91125 \, b^{10} \left (-\frac {c}{b^{13}}\right )^{\frac {3}{4}} + 91125 \, c \sqrt {x}\right ) + 45 \, {\left (-i \, b^{3} c^{2} x^{5} - 2 i \, b^{4} c x^{3} - i \, b^{5} x\right )} \left (-\frac {c}{b^{13}}\right )^{\frac {1}{4}} \log \left (91125 i \, b^{10} \left (-\frac {c}{b^{13}}\right )^{\frac {3}{4}} + 91125 \, c \sqrt {x}\right ) + 45 \, {\left (i \, b^{3} c^{2} x^{5} + 2 i \, b^{4} c x^{3} + i \, b^{5} x\right )} \left (-\frac {c}{b^{13}}\right )^{\frac {1}{4}} \log \left (-91125 i \, b^{10} \left (-\frac {c}{b^{13}}\right )^{\frac {3}{4}} + 91125 \, c \sqrt {x}\right ) - 45 \, {\left (b^{3} c^{2} x^{5} + 2 \, b^{4} c x^{3} + b^{5} x\right )} \left (-\frac {c}{b^{13}}\right )^{\frac {1}{4}} \log \left (-91125 \, b^{10} \left (-\frac {c}{b^{13}}\right )^{\frac {3}{4}} + 91125 \, c \sqrt {x}\right ) + 4 \, {\left (45 \, c^{2} x^{4} + 81 \, b c x^{2} + 32 \, b^{2}\right )} \sqrt {x}}{64 \, {\left (b^{3} c^{2} x^{5} + 2 \, b^{4} c x^{3} + b^{5} x\right )}} \]
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Timed out. \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=\text {Timed out} \]
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Time = 0.29 (sec) , antiderivative size = 230, normalized size of antiderivative = 0.92 \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=-\frac {45 \, c^{2} x^{4} + 81 \, b c x^{2} + 32 \, b^{2}}{16 \, {\left (b^{3} c^{2} x^{\frac {9}{2}} + 2 \, b^{4} c x^{\frac {5}{2}} + b^{5} \sqrt {x}\right )}} - \frac {45 \, c {\left (\frac {2 \, \sqrt {2} \arctan \left (\frac {\sqrt {2} {\left (\sqrt {2} b^{\frac {1}{4}} c^{\frac {1}{4}} + 2 \, \sqrt {c} \sqrt {x}\right )}}{2 \, \sqrt {\sqrt {b} \sqrt {c}}}\right )}{\sqrt {\sqrt {b} \sqrt {c}} \sqrt {c}} + \frac {2 \, \sqrt {2} \arctan \left (-\frac {\sqrt {2} {\left (\sqrt {2} b^{\frac {1}{4}} c^{\frac {1}{4}} - 2 \, \sqrt {c} \sqrt {x}\right )}}{2 \, \sqrt {\sqrt {b} \sqrt {c}}}\right )}{\sqrt {\sqrt {b} \sqrt {c}} \sqrt {c}} - \frac {\sqrt {2} \log \left (\sqrt {2} b^{\frac {1}{4}} c^{\frac {1}{4}} \sqrt {x} + \sqrt {c} x + \sqrt {b}\right )}{b^{\frac {1}{4}} c^{\frac {3}{4}}} + \frac {\sqrt {2} \log \left (-\sqrt {2} b^{\frac {1}{4}} c^{\frac {1}{4}} \sqrt {x} + \sqrt {c} x + \sqrt {b}\right )}{b^{\frac {1}{4}} c^{\frac {3}{4}}}\right )}}{128 \, b^{3}} \]
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Time = 0.27 (sec) , antiderivative size = 220, normalized size of antiderivative = 0.88 \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=-\frac {2}{b^{3} \sqrt {x}} - \frac {45 \, \sqrt {2} \left (b c^{3}\right )^{\frac {3}{4}} \arctan \left (\frac {\sqrt {2} {\left (\sqrt {2} \left (\frac {b}{c}\right )^{\frac {1}{4}} + 2 \, \sqrt {x}\right )}}{2 \, \left (\frac {b}{c}\right )^{\frac {1}{4}}}\right )}{64 \, b^{4} c^{2}} - \frac {45 \, \sqrt {2} \left (b c^{3}\right )^{\frac {3}{4}} \arctan \left (-\frac {\sqrt {2} {\left (\sqrt {2} \left (\frac {b}{c}\right )^{\frac {1}{4}} - 2 \, \sqrt {x}\right )}}{2 \, \left (\frac {b}{c}\right )^{\frac {1}{4}}}\right )}{64 \, b^{4} c^{2}} + \frac {45 \, \sqrt {2} \left (b c^{3}\right )^{\frac {3}{4}} \log \left (\sqrt {2} \sqrt {x} \left (\frac {b}{c}\right )^{\frac {1}{4}} + x + \sqrt {\frac {b}{c}}\right )}{128 \, b^{4} c^{2}} - \frac {45 \, \sqrt {2} \left (b c^{3}\right )^{\frac {3}{4}} \log \left (-\sqrt {2} \sqrt {x} \left (\frac {b}{c}\right )^{\frac {1}{4}} + x + \sqrt {\frac {b}{c}}\right )}{128 \, b^{4} c^{2}} - \frac {13 \, c^{2} x^{\frac {7}{2}} + 17 \, b c x^{\frac {3}{2}}}{16 \, {\left (c x^{2} + b\right )}^{2} b^{3}} \]
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Time = 12.96 (sec) , antiderivative size = 99, normalized size of antiderivative = 0.39 \[ \int \frac {x^{9/2}}{\left (b x^2+c x^4\right )^3} \, dx=\frac {45\,{\left (-c\right )}^{1/4}\,\mathrm {atanh}\left (\frac {{\left (-c\right )}^{1/4}\,\sqrt {x}}{b^{1/4}}\right )}{32\,b^{13/4}}-\frac {45\,{\left (-c\right )}^{1/4}\,\mathrm {atan}\left (\frac {{\left (-c\right )}^{1/4}\,\sqrt {x}}{b^{1/4}}\right )}{32\,b^{13/4}}-\frac {\frac {2}{b}+\frac {81\,c\,x^2}{16\,b^2}+\frac {45\,c^2\,x^4}{16\,b^3}}{b^2\,\sqrt {x}+c^2\,x^{9/2}+2\,b\,c\,x^{5/2}} \]
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