Integrand size = 15, antiderivative size = 64 \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=-\frac {2 b \sqrt {a+b x}}{\sqrt {x}}-\frac {2 (a+b x)^{3/2}}{3 x^{3/2}}+2 b^{3/2} \text {arctanh}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 64, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {49, 65, 223, 212} \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=2 b^{3/2} \text {arctanh}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right )-\frac {2 (a+b x)^{3/2}}{3 x^{3/2}}-\frac {2 b \sqrt {a+b x}}{\sqrt {x}} \]
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Rule 49
Rule 65
Rule 212
Rule 223
Rubi steps \begin{align*} \text {integral}& = -\frac {2 (a+b x)^{3/2}}{3 x^{3/2}}+b \int \frac {\sqrt {a+b x}}{x^{3/2}} \, dx \\ & = -\frac {2 b \sqrt {a+b x}}{\sqrt {x}}-\frac {2 (a+b x)^{3/2}}{3 x^{3/2}}+b^2 \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx \\ & = -\frac {2 b \sqrt {a+b x}}{\sqrt {x}}-\frac {2 (a+b x)^{3/2}}{3 x^{3/2}}+\left (2 b^2\right ) \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,\sqrt {x}\right ) \\ & = -\frac {2 b \sqrt {a+b x}}{\sqrt {x}}-\frac {2 (a+b x)^{3/2}}{3 x^{3/2}}+\left (2 b^2\right ) \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt {a+b x}}\right ) \\ & = -\frac {2 b \sqrt {a+b x}}{\sqrt {x}}-\frac {2 (a+b x)^{3/2}}{3 x^{3/2}}+2 b^{3/2} \tanh ^{-1}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right ) \\ \end{align*}
Time = 0.11 (sec) , antiderivative size = 55, normalized size of antiderivative = 0.86 \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=-\frac {2 \sqrt {a+b x} (a+4 b x)}{3 x^{3/2}}-2 b^{3/2} \log \left (-\sqrt {b} \sqrt {x}+\sqrt {a+b x}\right ) \]
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Time = 0.08 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.05
method | result | size |
risch | \(-\frac {2 \sqrt {b x +a}\, \left (4 b x +a \right )}{3 x^{\frac {3}{2}}}+\frac {b^{\frac {3}{2}} \ln \left (\frac {\frac {a}{2}+b x}{\sqrt {b}}+\sqrt {b \,x^{2}+a x}\right ) \sqrt {x \left (b x +a \right )}}{\sqrt {x}\, \sqrt {b x +a}}\) | \(67\) |
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Time = 0.23 (sec) , antiderivative size = 109, normalized size of antiderivative = 1.70 \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=\left [\frac {3 \, b^{\frac {3}{2}} x^{2} \log \left (2 \, b x + 2 \, \sqrt {b x + a} \sqrt {b} \sqrt {x} + a\right ) - 2 \, {\left (4 \, b x + a\right )} \sqrt {b x + a} \sqrt {x}}{3 \, x^{2}}, -\frac {2 \, {\left (3 \, \sqrt {-b} b x^{2} \arctan \left (\frac {\sqrt {b x + a} \sqrt {-b}}{b \sqrt {x}}\right ) + {\left (4 \, b x + a\right )} \sqrt {b x + a} \sqrt {x}\right )}}{3 \, x^{2}}\right ] \]
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Time = 2.24 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.11 \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=- \frac {2 a \sqrt {b} \sqrt {\frac {a}{b x} + 1}}{3 x} - \frac {8 b^{\frac {3}{2}} \sqrt {\frac {a}{b x} + 1}}{3} - b^{\frac {3}{2}} \log {\left (\frac {a}{b x} \right )} + 2 b^{\frac {3}{2}} \log {\left (\sqrt {\frac {a}{b x} + 1} + 1 \right )} \]
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Time = 0.30 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.05 \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=-b^{\frac {3}{2}} \log \left (-\frac {\sqrt {b} - \frac {\sqrt {b x + a}}{\sqrt {x}}}{\sqrt {b} + \frac {\sqrt {b x + a}}{\sqrt {x}}}\right ) - \frac {2 \, \sqrt {b x + a} b}{\sqrt {x}} - \frac {2 \, {\left (b x + a\right )}^{\frac {3}{2}}}{3 \, x^{\frac {3}{2}}} \]
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Time = 76.88 (sec) , antiderivative size = 81, normalized size of antiderivative = 1.27 \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=-\frac {2 \, {\left (3 \, b^{\frac {3}{2}} \log \left ({\left | -\sqrt {b x + a} \sqrt {b} + \sqrt {{\left (b x + a\right )} b - a b} \right |}\right ) + \frac {{\left (4 \, {\left (b x + a\right )} b^{3} - 3 \, a b^{3}\right )} \sqrt {b x + a}}{{\left ({\left (b x + a\right )} b - a b\right )}^{\frac {3}{2}}}\right )} b}{3 \, {\left | b \right |}} \]
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Timed out. \[ \int \frac {(a+b x)^{3/2}}{x^{5/2}} \, dx=\int \frac {{\left (a+b\,x\right )}^{3/2}}{x^{5/2}} \,d x \]
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