Integrand size = 13, antiderivative size = 98 \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=9 a^3 b \sqrt {a+b x}+3 a^2 b (a+b x)^{3/2}+\frac {9}{5} a b (a+b x)^{5/2}+\frac {9}{7} b (a+b x)^{7/2}-\frac {(a+b x)^{9/2}}{x}-9 a^{7/2} b \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 98, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {43, 52, 65, 214} \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=-9 a^{7/2} b \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )+9 a^3 b \sqrt {a+b x}+3 a^2 b (a+b x)^{3/2}-\frac {(a+b x)^{9/2}}{x}+\frac {9}{7} b (a+b x)^{7/2}+\frac {9}{5} a b (a+b x)^{5/2} \]
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Rule 43
Rule 52
Rule 65
Rule 214
Rubi steps \begin{align*} \text {integral}& = -\frac {(a+b x)^{9/2}}{x}+\frac {1}{2} (9 b) \int \frac {(a+b x)^{7/2}}{x} \, dx \\ & = \frac {9}{7} b (a+b x)^{7/2}-\frac {(a+b x)^{9/2}}{x}+\frac {1}{2} (9 a b) \int \frac {(a+b x)^{5/2}}{x} \, dx \\ & = \frac {9}{5} a b (a+b x)^{5/2}+\frac {9}{7} b (a+b x)^{7/2}-\frac {(a+b x)^{9/2}}{x}+\frac {1}{2} \left (9 a^2 b\right ) \int \frac {(a+b x)^{3/2}}{x} \, dx \\ & = 3 a^2 b (a+b x)^{3/2}+\frac {9}{5} a b (a+b x)^{5/2}+\frac {9}{7} b (a+b x)^{7/2}-\frac {(a+b x)^{9/2}}{x}+\frac {1}{2} \left (9 a^3 b\right ) \int \frac {\sqrt {a+b x}}{x} \, dx \\ & = 9 a^3 b \sqrt {a+b x}+3 a^2 b (a+b x)^{3/2}+\frac {9}{5} a b (a+b x)^{5/2}+\frac {9}{7} b (a+b x)^{7/2}-\frac {(a+b x)^{9/2}}{x}+\frac {1}{2} \left (9 a^4 b\right ) \int \frac {1}{x \sqrt {a+b x}} \, dx \\ & = 9 a^3 b \sqrt {a+b x}+3 a^2 b (a+b x)^{3/2}+\frac {9}{5} a b (a+b x)^{5/2}+\frac {9}{7} b (a+b x)^{7/2}-\frac {(a+b x)^{9/2}}{x}+\left (9 a^4\right ) \text {Subst}\left (\int \frac {1}{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b x}\right ) \\ & = 9 a^3 b \sqrt {a+b x}+3 a^2 b (a+b x)^{3/2}+\frac {9}{5} a b (a+b x)^{5/2}+\frac {9}{7} b (a+b x)^{7/2}-\frac {(a+b x)^{9/2}}{x}-9 a^{7/2} b \tanh ^{-1}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right ) \\ \end{align*}
Time = 0.08 (sec) , antiderivative size = 82, normalized size of antiderivative = 0.84 \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=\frac {\sqrt {a+b x} \left (-35 a^4+388 a^3 b x+156 a^2 b^2 x^2+58 a b^3 x^3+10 b^4 x^4\right )}{35 x}-9 a^{7/2} b \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right ) \]
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Time = 0.11 (sec) , antiderivative size = 81, normalized size of antiderivative = 0.83
method | result | size |
risch | \(-\frac {a^{4} \sqrt {b x +a}}{x}+\frac {b \left (\frac {4 \left (b x +a \right )^{\frac {7}{2}}}{7}+\frac {8 a \left (b x +a \right )^{\frac {5}{2}}}{5}+4 a^{2} \left (b x +a \right )^{\frac {3}{2}}+16 a^{3} \sqrt {b x +a}-18 a^{\frac {7}{2}} \operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )\right )}{2}\) | \(81\) |
pseudoelliptic | \(-\frac {9 \left (\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right ) a^{4} b x -\frac {2 \left (\sqrt {a}\, b^{4} x^{4}+\frac {29 a^{\frac {3}{2}} b^{3} x^{3}}{5}+\frac {78 a^{\frac {5}{2}} b^{2} x^{2}}{5}+\frac {194 a^{\frac {7}{2}} b x}{5}-\frac {7 a^{\frac {9}{2}}}{2}\right ) \sqrt {b x +a}}{63}\right )}{\sqrt {a}\, x}\) | \(82\) |
derivativedivides | \(2 b \left (\frac {\left (b x +a \right )^{\frac {7}{2}}}{7}+\frac {2 a \left (b x +a \right )^{\frac {5}{2}}}{5}+a^{2} \left (b x +a \right )^{\frac {3}{2}}+4 a^{3} \sqrt {b x +a}-a^{4} \left (\frac {\sqrt {b x +a}}{2 b x}+\frac {9 \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{2 \sqrt {a}}\right )\right )\) | \(85\) |
default | \(2 b \left (\frac {\left (b x +a \right )^{\frac {7}{2}}}{7}+\frac {2 a \left (b x +a \right )^{\frac {5}{2}}}{5}+a^{2} \left (b x +a \right )^{\frac {3}{2}}+4 a^{3} \sqrt {b x +a}-a^{4} \left (\frac {\sqrt {b x +a}}{2 b x}+\frac {9 \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{2 \sqrt {a}}\right )\right )\) | \(85\) |
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Time = 0.24 (sec) , antiderivative size = 172, normalized size of antiderivative = 1.76 \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=\left [\frac {315 \, a^{\frac {7}{2}} b x \log \left (\frac {b x - 2 \, \sqrt {b x + a} \sqrt {a} + 2 \, a}{x}\right ) + 2 \, {\left (10 \, b^{4} x^{4} + 58 \, a b^{3} x^{3} + 156 \, a^{2} b^{2} x^{2} + 388 \, a^{3} b x - 35 \, a^{4}\right )} \sqrt {b x + a}}{70 \, x}, \frac {315 \, \sqrt {-a} a^{3} b x \arctan \left (\frac {\sqrt {b x + a} \sqrt {-a}}{a}\right ) + {\left (10 \, b^{4} x^{4} + 58 \, a b^{3} x^{3} + 156 \, a^{2} b^{2} x^{2} + 388 \, a^{3} b x - 35 \, a^{4}\right )} \sqrt {b x + a}}{35 \, x}\right ] \]
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Time = 13.43 (sec) , antiderivative size = 150, normalized size of antiderivative = 1.53 \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=- \frac {a^{\frac {9}{2}} \sqrt {1 + \frac {b x}{a}}}{x} + \frac {388 a^{\frac {7}{2}} b \sqrt {1 + \frac {b x}{a}}}{35} + \frac {9 a^{\frac {7}{2}} b \log {\left (\frac {b x}{a} \right )}}{2} - 9 a^{\frac {7}{2}} b \log {\left (\sqrt {1 + \frac {b x}{a}} + 1 \right )} + \frac {156 a^{\frac {5}{2}} b^{2} x \sqrt {1 + \frac {b x}{a}}}{35} + \frac {58 a^{\frac {3}{2}} b^{3} x^{2} \sqrt {1 + \frac {b x}{a}}}{35} + \frac {2 \sqrt {a} b^{4} x^{3} \sqrt {1 + \frac {b x}{a}}}{7} \]
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Time = 0.29 (sec) , antiderivative size = 97, normalized size of antiderivative = 0.99 \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=\frac {9}{2} \, a^{\frac {7}{2}} b \log \left (\frac {\sqrt {b x + a} - \sqrt {a}}{\sqrt {b x + a} + \sqrt {a}}\right ) + \frac {2}{7} \, {\left (b x + a\right )}^{\frac {7}{2}} b + \frac {4}{5} \, {\left (b x + a\right )}^{\frac {5}{2}} a b + 2 \, {\left (b x + a\right )}^{\frac {3}{2}} a^{2} b + 8 \, \sqrt {b x + a} a^{3} b - \frac {\sqrt {b x + a} a^{4}}{x} \]
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Time = 0.35 (sec) , antiderivative size = 104, normalized size of antiderivative = 1.06 \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=\frac {\frac {315 \, a^{4} b^{2} \arctan \left (\frac {\sqrt {b x + a}}{\sqrt {-a}}\right )}{\sqrt {-a}} + 10 \, {\left (b x + a\right )}^{\frac {7}{2}} b^{2} + 28 \, {\left (b x + a\right )}^{\frac {5}{2}} a b^{2} + 70 \, {\left (b x + a\right )}^{\frac {3}{2}} a^{2} b^{2} + 280 \, \sqrt {b x + a} a^{3} b^{2} - \frac {35 \, \sqrt {b x + a} a^{4} b}{x}}{35 \, b} \]
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Time = 0.06 (sec) , antiderivative size = 84, normalized size of antiderivative = 0.86 \[ \int \frac {(a+b x)^{9/2}}{x^2} \, dx=\frac {2\,b\,{\left (a+b\,x\right )}^{7/2}}{7}-\frac {a^4\,\sqrt {a+b\,x}}{x}+\frac {4\,a\,b\,{\left (a+b\,x\right )}^{5/2}}{5}+8\,a^3\,b\,\sqrt {a+b\,x}+2\,a^2\,b\,{\left (a+b\,x\right )}^{3/2}+a^{7/2}\,b\,\mathrm {atan}\left (\frac {\sqrt {a+b\,x}\,1{}\mathrm {i}}{\sqrt {a}}\right )\,9{}\mathrm {i} \]
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