Integrand size = 13, antiderivative size = 78 \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=\frac {15}{4} b^2 \sqrt {a+b x}-\frac {5 b (a+b x)^{3/2}}{4 x}-\frac {(a+b x)^{5/2}}{2 x^2}-\frac {15}{4} \sqrt {a} b^2 \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right ) \]
[Out]
Time = 0.01 (sec) , antiderivative size = 78, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {43, 52, 65, 214} \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=-\frac {15}{4} \sqrt {a} b^2 \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )+\frac {15}{4} b^2 \sqrt {a+b x}-\frac {(a+b x)^{5/2}}{2 x^2}-\frac {5 b (a+b x)^{3/2}}{4 x} \]
[In]
[Out]
Rule 43
Rule 52
Rule 65
Rule 214
Rubi steps \begin{align*} \text {integral}& = -\frac {(a+b x)^{5/2}}{2 x^2}+\frac {1}{4} (5 b) \int \frac {(a+b x)^{3/2}}{x^2} \, dx \\ & = -\frac {5 b (a+b x)^{3/2}}{4 x}-\frac {(a+b x)^{5/2}}{2 x^2}+\frac {1}{8} \left (15 b^2\right ) \int \frac {\sqrt {a+b x}}{x} \, dx \\ & = \frac {15}{4} b^2 \sqrt {a+b x}-\frac {5 b (a+b x)^{3/2}}{4 x}-\frac {(a+b x)^{5/2}}{2 x^2}+\frac {1}{8} \left (15 a b^2\right ) \int \frac {1}{x \sqrt {a+b x}} \, dx \\ & = \frac {15}{4} b^2 \sqrt {a+b x}-\frac {5 b (a+b x)^{3/2}}{4 x}-\frac {(a+b x)^{5/2}}{2 x^2}+\frac {1}{4} (15 a b) \text {Subst}\left (\int \frac {1}{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b x}\right ) \\ & = \frac {15}{4} b^2 \sqrt {a+b x}-\frac {5 b (a+b x)^{3/2}}{4 x}-\frac {(a+b x)^{5/2}}{2 x^2}-\frac {15}{4} \sqrt {a} b^2 \tanh ^{-1}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right ) \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 63, normalized size of antiderivative = 0.81 \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=\frac {1}{4} \left (\frac {\sqrt {a+b x} \left (-2 a^2-9 a b x+8 b^2 x^2\right )}{x^2}-15 \sqrt {a} b^2 \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )\right ) \]
[In]
[Out]
Time = 0.10 (sec) , antiderivative size = 55, normalized size of antiderivative = 0.71
method | result | size |
risch | \(-\frac {a \sqrt {b x +a}\, \left (9 b x +2 a \right )}{4 x^{2}}+\frac {b^{2} \left (16 \sqrt {b x +a}-30 \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right ) \sqrt {a}\right )}{8}\) | \(55\) |
derivativedivides | \(2 b^{2} \left (\sqrt {b x +a}-a \left (\frac {\frac {9 \left (b x +a \right )^{\frac {3}{2}}}{8}-\frac {7 a \sqrt {b x +a}}{8}}{b^{2} x^{2}}+\frac {15 \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{8 \sqrt {a}}\right )\right )\) | \(62\) |
default | \(2 b^{2} \left (\sqrt {b x +a}-a \left (\frac {\frac {9 \left (b x +a \right )^{\frac {3}{2}}}{8}-\frac {7 a \sqrt {b x +a}}{8}}{b^{2} x^{2}}+\frac {15 \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{8 \sqrt {a}}\right )\right )\) | \(62\) |
pseudoelliptic | \(\frac {-2 \sqrt {b x +a}\, a^{\frac {5}{2}}-9 a^{\frac {3}{2}} b x \sqrt {b x +a}+8 b^{2} x^{2} \sqrt {b x +a}\, \sqrt {a}-15 \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right ) a \,b^{2} x^{2}}{4 x^{2} \sqrt {a}}\) | \(75\) |
[In]
[Out]
none
Time = 0.24 (sec) , antiderivative size = 133, normalized size of antiderivative = 1.71 \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=\left [\frac {15 \, \sqrt {a} b^{2} x^{2} \log \left (\frac {b x - 2 \, \sqrt {b x + a} \sqrt {a} + 2 \, a}{x}\right ) + 2 \, {\left (8 \, b^{2} x^{2} - 9 \, a b x - 2 \, a^{2}\right )} \sqrt {b x + a}}{8 \, x^{2}}, \frac {15 \, \sqrt {-a} b^{2} x^{2} \arctan \left (\frac {\sqrt {b x + a} \sqrt {-a}}{a}\right ) + {\left (8 \, b^{2} x^{2} - 9 \, a b x - 2 \, a^{2}\right )} \sqrt {b x + a}}{4 \, x^{2}}\right ] \]
[In]
[Out]
Time = 3.71 (sec) , antiderivative size = 126, normalized size of antiderivative = 1.62 \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=- \frac {15 \sqrt {a} b^{2} \operatorname {asinh}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{4} - \frac {a^{3}}{2 \sqrt {b} x^{\frac {5}{2}} \sqrt {\frac {a}{b x} + 1}} - \frac {11 a^{2} \sqrt {b}}{4 x^{\frac {3}{2}} \sqrt {\frac {a}{b x} + 1}} - \frac {a b^{\frac {3}{2}}}{4 \sqrt {x} \sqrt {\frac {a}{b x} + 1}} + \frac {2 b^{\frac {5}{2}} \sqrt {x}}{\sqrt {\frac {a}{b x} + 1}} \]
[In]
[Out]
none
Time = 0.30 (sec) , antiderivative size = 101, normalized size of antiderivative = 1.29 \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=\frac {15}{8} \, \sqrt {a} b^{2} \log \left (\frac {\sqrt {b x + a} - \sqrt {a}}{\sqrt {b x + a} + \sqrt {a}}\right ) + 2 \, \sqrt {b x + a} b^{2} - \frac {9 \, {\left (b x + a\right )}^{\frac {3}{2}} a b^{2} - 7 \, \sqrt {b x + a} a^{2} b^{2}}{4 \, {\left ({\left (b x + a\right )}^{2} - 2 \, {\left (b x + a\right )} a + a^{2}\right )}} \]
[In]
[Out]
none
Time = 0.30 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.03 \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=\frac {\frac {15 \, a b^{3} \arctan \left (\frac {\sqrt {b x + a}}{\sqrt {-a}}\right )}{\sqrt {-a}} + 8 \, \sqrt {b x + a} b^{3} - \frac {9 \, {\left (b x + a\right )}^{\frac {3}{2}} a b^{3} - 7 \, \sqrt {b x + a} a^{2} b^{3}}{b^{2} x^{2}}}{4 \, b} \]
[In]
[Out]
Time = 0.08 (sec) , antiderivative size = 64, normalized size of antiderivative = 0.82 \[ \int \frac {(a+b x)^{5/2}}{x^3} \, dx=2\,b^2\,\sqrt {a+b\,x}+\frac {7\,a^2\,\sqrt {a+b\,x}}{4\,x^2}-\frac {9\,a\,{\left (a+b\,x\right )}^{3/2}}{4\,x^2}+\frac {\sqrt {a}\,b^2\,\mathrm {atan}\left (\frac {\sqrt {a+b\,x}\,1{}\mathrm {i}}{\sqrt {a}}\right )\,15{}\mathrm {i}}{4} \]
[In]
[Out]