Integrand size = 26, antiderivative size = 83 \[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\frac {a \sqrt {c+d x^2}}{b (b c-a d) \sqrt {a+b x^2}}+\frac {\text {arctanh}\left (\frac {\sqrt {d} \sqrt {a+b x^2}}{\sqrt {b} \sqrt {c+d x^2}}\right )}{b^{3/2} \sqrt {d}} \]
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Time = 0.06 (sec) , antiderivative size = 83, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.192, Rules used = {457, 79, 65, 223, 212} \[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\frac {\text {arctanh}\left (\frac {\sqrt {d} \sqrt {a+b x^2}}{\sqrt {b} \sqrt {c+d x^2}}\right )}{b^{3/2} \sqrt {d}}+\frac {a \sqrt {c+d x^2}}{b \sqrt {a+b x^2} (b c-a d)} \]
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Rule 65
Rule 79
Rule 212
Rule 223
Rule 457
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {x}{(a+b x)^{3/2} \sqrt {c+d x}} \, dx,x,x^2\right ) \\ & = \frac {a \sqrt {c+d x^2}}{b (b c-a d) \sqrt {a+b x^2}}+\frac {\text {Subst}\left (\int \frac {1}{\sqrt {a+b x} \sqrt {c+d x}} \, dx,x,x^2\right )}{2 b} \\ & = \frac {a \sqrt {c+d x^2}}{b (b c-a d) \sqrt {a+b x^2}}+\frac {\text {Subst}\left (\int \frac {1}{\sqrt {c-\frac {a d}{b}+\frac {d x^2}{b}}} \, dx,x,\sqrt {a+b x^2}\right )}{b^2} \\ & = \frac {a \sqrt {c+d x^2}}{b (b c-a d) \sqrt {a+b x^2}}+\frac {\text {Subst}\left (\int \frac {1}{1-\frac {d x^2}{b}} \, dx,x,\frac {\sqrt {a+b x^2}}{\sqrt {c+d x^2}}\right )}{b^2} \\ & = \frac {a \sqrt {c+d x^2}}{b (b c-a d) \sqrt {a+b x^2}}+\frac {\tanh ^{-1}\left (\frac {\sqrt {d} \sqrt {a+b x^2}}{\sqrt {b} \sqrt {c+d x^2}}\right )}{b^{3/2} \sqrt {d}} \\ \end{align*}
Time = 1.28 (sec) , antiderivative size = 83, normalized size of antiderivative = 1.00 \[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\frac {a \sqrt {c+d x^2}}{b (b c-a d) \sqrt {a+b x^2}}+\frac {\text {arctanh}\left (\frac {\sqrt {b} \sqrt {c+d x^2}}{\sqrt {d} \sqrt {a+b x^2}}\right )}{b^{3/2} \sqrt {d}} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(154\) vs. \(2(67)=134\).
Time = 3.11 (sec) , antiderivative size = 155, normalized size of antiderivative = 1.87
method | result | size |
elliptic | \(\frac {\sqrt {\left (b \,x^{2}+a \right ) \left (d \,x^{2}+c \right )}\, \left (\frac {\ln \left (\frac {\frac {1}{2} a d +\frac {1}{2} b c +b d \,x^{2}}{\sqrt {b d}}+\sqrt {b d \,x^{4}+\left (a d +b c \right ) x^{2}+a c}\right )}{2 b \sqrt {b d}}+\frac {a \sqrt {b d \left (x^{2}+\frac {a}{b}\right )^{2}+\left (-a d +b c \right ) \left (x^{2}+\frac {a}{b}\right )}}{b^{2} \left (-a d +b c \right ) \left (x^{2}+\frac {a}{b}\right )}\right )}{\sqrt {b \,x^{2}+a}\, \sqrt {d \,x^{2}+c}}\) | \(155\) |
default | \(\frac {\left (\ln \left (\frac {2 b d \,x^{2}+2 \sqrt {\left (b \,x^{2}+a \right ) \left (d \,x^{2}+c \right )}\, \sqrt {b d}+a d +b c}{2 \sqrt {b d}}\right ) a b d \,x^{2}-\ln \left (\frac {2 b d \,x^{2}+2 \sqrt {\left (b \,x^{2}+a \right ) \left (d \,x^{2}+c \right )}\, \sqrt {b d}+a d +b c}{2 \sqrt {b d}}\right ) b^{2} c \,x^{2}+\ln \left (\frac {2 b d \,x^{2}+2 \sqrt {\left (b \,x^{2}+a \right ) \left (d \,x^{2}+c \right )}\, \sqrt {b d}+a d +b c}{2 \sqrt {b d}}\right ) a^{2} d -\ln \left (\frac {2 b d \,x^{2}+2 \sqrt {\left (b \,x^{2}+a \right ) \left (d \,x^{2}+c \right )}\, \sqrt {b d}+a d +b c}{2 \sqrt {b d}}\right ) a b c -2 \sqrt {b d}\, \sqrt {\left (b \,x^{2}+a \right ) \left (d \,x^{2}+c \right )}\, a \right ) \sqrt {d \,x^{2}+c}}{2 b \sqrt {b \,x^{2}+a}\, \sqrt {b d}\, \left (a d -b c \right ) \sqrt {\left (b \,x^{2}+a \right ) \left (d \,x^{2}+c \right )}}\) | \(292\) |
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Leaf count of result is larger than twice the leaf count of optimal. 177 vs. \(2 (67) = 134\).
Time = 0.30 (sec) , antiderivative size = 367, normalized size of antiderivative = 4.42 \[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\left [\frac {4 \, \sqrt {b x^{2} + a} \sqrt {d x^{2} + c} a b d + {\left (a b c - a^{2} d + {\left (b^{2} c - a b d\right )} x^{2}\right )} \sqrt {b d} \log \left (8 \, b^{2} d^{2} x^{4} + b^{2} c^{2} + 6 \, a b c d + a^{2} d^{2} + 8 \, {\left (b^{2} c d + a b d^{2}\right )} x^{2} + 4 \, {\left (2 \, b d x^{2} + b c + a d\right )} \sqrt {b x^{2} + a} \sqrt {d x^{2} + c} \sqrt {b d}\right )}{4 \, {\left (a b^{3} c d - a^{2} b^{2} d^{2} + {\left (b^{4} c d - a b^{3} d^{2}\right )} x^{2}\right )}}, \frac {2 \, \sqrt {b x^{2} + a} \sqrt {d x^{2} + c} a b d - {\left (a b c - a^{2} d + {\left (b^{2} c - a b d\right )} x^{2}\right )} \sqrt {-b d} \arctan \left (\frac {{\left (2 \, b d x^{2} + b c + a d\right )} \sqrt {b x^{2} + a} \sqrt {d x^{2} + c} \sqrt {-b d}}{2 \, {\left (b^{2} d^{2} x^{4} + a b c d + {\left (b^{2} c d + a b d^{2}\right )} x^{2}\right )}}\right )}{2 \, {\left (a b^{3} c d - a^{2} b^{2} d^{2} + {\left (b^{4} c d - a b^{3} d^{2}\right )} x^{2}\right )}}\right ] \]
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\[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\int \frac {x^{3}}{\left (a + b x^{2}\right )^{\frac {3}{2}} \sqrt {c + d x^{2}}}\, dx \]
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Exception generated. \[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\text {Exception raised: ValueError} \]
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Leaf count of result is larger than twice the leaf count of optimal. 135 vs. \(2 (67) = 134\).
Time = 0.32 (sec) , antiderivative size = 135, normalized size of antiderivative = 1.63 \[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\frac {\frac {4 \, \sqrt {b d} a b}{{\left (b^{2} c - a b d - {\left (\sqrt {b x^{2} + a} \sqrt {b d} - \sqrt {b^{2} c + {\left (b x^{2} + a\right )} b d - a b d}\right )}^{2}\right )} {\left | b \right |}} - \frac {\sqrt {b d} \log \left ({\left (\sqrt {b x^{2} + a} \sqrt {b d} - \sqrt {b^{2} c + {\left (b x^{2} + a\right )} b d - a b d}\right )}^{2}\right )}{d {\left | b \right |}}}{2 \, b} \]
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Timed out. \[ \int \frac {x^3}{\left (a+b x^2\right )^{3/2} \sqrt {c+d x^2}} \, dx=\int \frac {x^3}{{\left (b\,x^2+a\right )}^{3/2}\,\sqrt {d\,x^2+c}} \,d x \]
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