Integrand size = 15, antiderivative size = 119 \[ \int x^{3/2} (a+b x)^{3/2} \, dx=-\frac {3 a^3 \sqrt {x} \sqrt {a+b x}}{64 b^2}+\frac {a^2 x^{3/2} \sqrt {a+b x}}{32 b}+\frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2}+\frac {3 a^4 \text {arctanh}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right )}{64 b^{5/2}} \]
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Time = 0.03 (sec) , antiderivative size = 119, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {52, 65, 223, 212} \[ \int x^{3/2} (a+b x)^{3/2} \, dx=\frac {3 a^4 \text {arctanh}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right )}{64 b^{5/2}}-\frac {3 a^3 \sqrt {x} \sqrt {a+b x}}{64 b^2}+\frac {a^2 x^{3/2} \sqrt {a+b x}}{32 b}+\frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2} \]
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Rule 52
Rule 65
Rule 212
Rule 223
Rubi steps \begin{align*} \text {integral}& = \frac {1}{4} x^{5/2} (a+b x)^{3/2}+\frac {1}{8} (3 a) \int x^{3/2} \sqrt {a+b x} \, dx \\ & = \frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2}+\frac {1}{16} a^2 \int \frac {x^{3/2}}{\sqrt {a+b x}} \, dx \\ & = \frac {a^2 x^{3/2} \sqrt {a+b x}}{32 b}+\frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2}-\frac {\left (3 a^3\right ) \int \frac {\sqrt {x}}{\sqrt {a+b x}} \, dx}{64 b} \\ & = -\frac {3 a^3 \sqrt {x} \sqrt {a+b x}}{64 b^2}+\frac {a^2 x^{3/2} \sqrt {a+b x}}{32 b}+\frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2}+\frac {\left (3 a^4\right ) \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx}{128 b^2} \\ & = -\frac {3 a^3 \sqrt {x} \sqrt {a+b x}}{64 b^2}+\frac {a^2 x^{3/2} \sqrt {a+b x}}{32 b}+\frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2}+\frac {\left (3 a^4\right ) \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,\sqrt {x}\right )}{64 b^2} \\ & = -\frac {3 a^3 \sqrt {x} \sqrt {a+b x}}{64 b^2}+\frac {a^2 x^{3/2} \sqrt {a+b x}}{32 b}+\frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2}+\frac {\left (3 a^4\right ) \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt {a+b x}}\right )}{64 b^2} \\ & = -\frac {3 a^3 \sqrt {x} \sqrt {a+b x}}{64 b^2}+\frac {a^2 x^{3/2} \sqrt {a+b x}}{32 b}+\frac {1}{8} a x^{5/2} \sqrt {a+b x}+\frac {1}{4} x^{5/2} (a+b x)^{3/2}+\frac {3 a^4 \tanh ^{-1}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right )}{64 b^{5/2}} \\ \end{align*}
Time = 0.33 (sec) , antiderivative size = 96, normalized size of antiderivative = 0.81 \[ \int x^{3/2} (a+b x)^{3/2} \, dx=\frac {\sqrt {b} \sqrt {x} \sqrt {a+b x} \left (-3 a^3+2 a^2 b x+24 a b^2 x^2+16 b^3 x^3\right )+6 a^4 \text {arctanh}\left (\frac {\sqrt {b} \sqrt {x}}{-\sqrt {a}+\sqrt {a+b x}}\right )}{64 b^{5/2}} \]
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Time = 0.08 (sec) , antiderivative size = 98, normalized size of antiderivative = 0.82
method | result | size |
risch | \(-\frac {\left (-16 b^{3} x^{3}-24 a \,b^{2} x^{2}-2 a^{2} b x +3 a^{3}\right ) \sqrt {x}\, \sqrt {b x +a}}{64 b^{2}}+\frac {3 a^{4} \ln \left (\frac {\frac {a}{2}+b x}{\sqrt {b}}+\sqrt {b \,x^{2}+a x}\right ) \sqrt {x \left (b x +a \right )}}{128 b^{\frac {5}{2}} \sqrt {x}\, \sqrt {b x +a}}\) | \(98\) |
default | \(\frac {x^{\frac {3}{2}} \left (b x +a \right )^{\frac {5}{2}}}{4 b}-\frac {3 a \left (\frac {\sqrt {x}\, \left (b x +a \right )^{\frac {5}{2}}}{3 b}-\frac {a \left (\frac {\left (b x +a \right )^{\frac {3}{2}} \sqrt {x}}{2}+\frac {3 a \left (\sqrt {x}\, \sqrt {b x +a}+\frac {a \sqrt {x \left (b x +a \right )}\, \ln \left (\frac {\frac {a}{2}+b x}{\sqrt {b}}+\sqrt {b \,x^{2}+a x}\right )}{2 \sqrt {b x +a}\, \sqrt {x}\, \sqrt {b}}\right )}{4}\right )}{6 b}\right )}{8 b}\) | \(122\) |
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none
Time = 0.26 (sec) , antiderivative size = 163, normalized size of antiderivative = 1.37 \[ \int x^{3/2} (a+b x)^{3/2} \, dx=\left [\frac {3 \, a^{4} \sqrt {b} \log \left (2 \, b x + 2 \, \sqrt {b x + a} \sqrt {b} \sqrt {x} + a\right ) + 2 \, {\left (16 \, b^{4} x^{3} + 24 \, a b^{3} x^{2} + 2 \, a^{2} b^{2} x - 3 \, a^{3} b\right )} \sqrt {b x + a} \sqrt {x}}{128 \, b^{3}}, -\frac {3 \, a^{4} \sqrt {-b} \arctan \left (\frac {\sqrt {b x + a} \sqrt {-b}}{b \sqrt {x}}\right ) - {\left (16 \, b^{4} x^{3} + 24 \, a b^{3} x^{2} + 2 \, a^{2} b^{2} x - 3 \, a^{3} b\right )} \sqrt {b x + a} \sqrt {x}}{64 \, b^{3}}\right ] \]
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Time = 16.58 (sec) , antiderivative size = 153, normalized size of antiderivative = 1.29 \[ \int x^{3/2} (a+b x)^{3/2} \, dx=- \frac {3 a^{\frac {7}{2}} \sqrt {x}}{64 b^{2} \sqrt {1 + \frac {b x}{a}}} - \frac {a^{\frac {5}{2}} x^{\frac {3}{2}}}{64 b \sqrt {1 + \frac {b x}{a}}} + \frac {13 a^{\frac {3}{2}} x^{\frac {5}{2}}}{32 \sqrt {1 + \frac {b x}{a}}} + \frac {5 \sqrt {a} b x^{\frac {7}{2}}}{8 \sqrt {1 + \frac {b x}{a}}} + \frac {3 a^{4} \operatorname {asinh}{\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a}} \right )}}{64 b^{\frac {5}{2}}} + \frac {b^{2} x^{\frac {9}{2}}}{4 \sqrt {a} \sqrt {1 + \frac {b x}{a}}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 178 vs. \(2 (85) = 170\).
Time = 0.31 (sec) , antiderivative size = 178, normalized size of antiderivative = 1.50 \[ \int x^{3/2} (a+b x)^{3/2} \, dx=-\frac {3 \, a^{4} \log \left (-\frac {\sqrt {b} - \frac {\sqrt {b x + a}}{\sqrt {x}}}{\sqrt {b} + \frac {\sqrt {b x + a}}{\sqrt {x}}}\right )}{128 \, b^{\frac {5}{2}}} - \frac {\frac {3 \, \sqrt {b x + a} a^{4} b^{3}}{\sqrt {x}} - \frac {11 \, {\left (b x + a\right )}^{\frac {3}{2}} a^{4} b^{2}}{x^{\frac {3}{2}}} - \frac {11 \, {\left (b x + a\right )}^{\frac {5}{2}} a^{4} b}{x^{\frac {5}{2}}} + \frac {3 \, {\left (b x + a\right )}^{\frac {7}{2}} a^{4}}{x^{\frac {7}{2}}}}{64 \, {\left (b^{6} - \frac {4 \, {\left (b x + a\right )} b^{5}}{x} + \frac {6 \, {\left (b x + a\right )}^{2} b^{4}}{x^{2}} - \frac {4 \, {\left (b x + a\right )}^{3} b^{3}}{x^{3}} + \frac {{\left (b x + a\right )}^{4} b^{2}}{x^{4}}\right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 299 vs. \(2 (85) = 170\).
Time = 231.64 (sec) , antiderivative size = 299, normalized size of antiderivative = 2.51 \[ \int x^{3/2} (a+b x)^{3/2} \, dx=-\frac {{\left (\frac {105 \, a^{4} \log \left ({\left | -\sqrt {b x + a} \sqrt {b} + \sqrt {{\left (b x + a\right )} b - a b} \right |}\right )}{b^{\frac {5}{2}}} - {\left (2 \, {\left (b x + a\right )} {\left (4 \, {\left (b x + a\right )} {\left (\frac {6 \, {\left (b x + a\right )}}{b^{3}} - \frac {25 \, a}{b^{3}}\right )} + \frac {163 \, a^{2}}{b^{3}}\right )} - \frac {279 \, a^{3}}{b^{3}}\right )} \sqrt {{\left (b x + a\right )} b - a b} \sqrt {b x + a}\right )} {\left | b \right |} - \frac {16 \, {\left (\frac {15 \, a^{3} \log \left ({\left | -\sqrt {b x + a} \sqrt {b} + \sqrt {{\left (b x + a\right )} b - a b} \right |}\right )}{b^{\frac {3}{2}}} + \sqrt {{\left (b x + a\right )} b - a b} \sqrt {b x + a} {\left (2 \, {\left (b x + a\right )} {\left (\frac {4 \, {\left (b x + a\right )}}{b^{2}} - \frac {13 \, a}{b^{2}}\right )} + \frac {33 \, a^{2}}{b^{2}}\right )}\right )} a {\left | b \right |}}{b} + \frac {48 \, {\left (3 \, a^{2} \sqrt {b} \log \left ({\left | -\sqrt {b x + a} \sqrt {b} + \sqrt {{\left (b x + a\right )} b - a b} \right |}\right ) - \sqrt {{\left (b x + a\right )} b - a b} {\left (2 \, b x - 3 \, a\right )} \sqrt {b x + a}\right )} a^{2} {\left | b \right |}}{b^{3}}}{192 \, b} \]
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Timed out. \[ \int x^{3/2} (a+b x)^{3/2} \, dx=\int x^{3/2}\,{\left (a+b\,x\right )}^{3/2} \,d x \]
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