Integrand size = 18, antiderivative size = 84 \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=-\frac {A \sqrt {a+b x}}{2 a x^2}+\frac {(3 A b-4 a B) \sqrt {a+b x}}{4 a^2 x}-\frac {b (3 A b-4 a B) \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )}{4 a^{5/2}} \]
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Time = 0.02 (sec) , antiderivative size = 84, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {79, 44, 65, 214} \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=-\frac {b (3 A b-4 a B) \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )}{4 a^{5/2}}+\frac {\sqrt {a+b x} (3 A b-4 a B)}{4 a^2 x}-\frac {A \sqrt {a+b x}}{2 a x^2} \]
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Rule 44
Rule 65
Rule 79
Rule 214
Rubi steps \begin{align*} \text {integral}& = -\frac {A \sqrt {a+b x}}{2 a x^2}+\frac {\left (-\frac {3 A b}{2}+2 a B\right ) \int \frac {1}{x^2 \sqrt {a+b x}} \, dx}{2 a} \\ & = -\frac {A \sqrt {a+b x}}{2 a x^2}+\frac {(3 A b-4 a B) \sqrt {a+b x}}{4 a^2 x}+\frac {(b (3 A b-4 a B)) \int \frac {1}{x \sqrt {a+b x}} \, dx}{8 a^2} \\ & = -\frac {A \sqrt {a+b x}}{2 a x^2}+\frac {(3 A b-4 a B) \sqrt {a+b x}}{4 a^2 x}+\frac {(3 A b-4 a B) \text {Subst}\left (\int \frac {1}{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b x}\right )}{4 a^2} \\ & = -\frac {A \sqrt {a+b x}}{2 a x^2}+\frac {(3 A b-4 a B) \sqrt {a+b x}}{4 a^2 x}-\frac {b (3 A b-4 a B) \tanh ^{-1}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )}{4 a^{5/2}} \\ \end{align*}
Time = 0.14 (sec) , antiderivative size = 70, normalized size of antiderivative = 0.83 \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=\frac {\frac {\sqrt {a} \sqrt {a+b x} (3 A b x-2 a (A+2 B x))}{x^2}+b (-3 A b+4 a B) \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )}{4 a^{5/2}} \]
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Time = 1.40 (sec) , antiderivative size = 59, normalized size of antiderivative = 0.70
method | result | size |
risch | \(-\frac {\sqrt {b x +a}\, \left (-3 A b x +4 B a x +2 A a \right )}{4 a^{2} x^{2}}-\frac {b \left (3 A b -4 B a \right ) \operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{4 a^{\frac {5}{2}}}\) | \(59\) |
pseudoelliptic | \(\frac {-\frac {3 x^{2} \left (A b -\frac {4 B a}{3}\right ) b \,\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{4}+\frac {3 \sqrt {b x +a}\, \left (\frac {2 \left (-2 B x -A \right ) a^{\frac {3}{2}}}{3}+A \sqrt {a}\, b x \right )}{4}}{a^{\frac {5}{2}} x^{2}}\) | \(65\) |
derivativedivides | \(2 b \left (-\frac {-\frac {\left (3 A b -4 B a \right ) \left (b x +a \right )^{\frac {3}{2}}}{8 a^{2}}+\frac {\left (5 A b -4 B a \right ) \sqrt {b x +a}}{8 a}}{b^{2} x^{2}}-\frac {\left (3 A b -4 B a \right ) \operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{8 a^{\frac {5}{2}}}\right )\) | \(82\) |
default | \(2 b \left (-\frac {-\frac {\left (3 A b -4 B a \right ) \left (b x +a \right )^{\frac {3}{2}}}{8 a^{2}}+\frac {\left (5 A b -4 B a \right ) \sqrt {b x +a}}{8 a}}{b^{2} x^{2}}-\frac {\left (3 A b -4 B a \right ) \operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )}{8 a^{\frac {5}{2}}}\right )\) | \(82\) |
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Time = 0.23 (sec) , antiderivative size = 159, normalized size of antiderivative = 1.89 \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=\left [-\frac {{\left (4 \, B a b - 3 \, A b^{2}\right )} \sqrt {a} x^{2} \log \left (\frac {b x - 2 \, \sqrt {b x + a} \sqrt {a} + 2 \, a}{x}\right ) + 2 \, {\left (2 \, A a^{2} + {\left (4 \, B a^{2} - 3 \, A a b\right )} x\right )} \sqrt {b x + a}}{8 \, a^{3} x^{2}}, -\frac {{\left (4 \, B a b - 3 \, A b^{2}\right )} \sqrt {-a} x^{2} \arctan \left (\frac {\sqrt {b x + a} \sqrt {-a}}{a}\right ) + {\left (2 \, A a^{2} + {\left (4 \, B a^{2} - 3 \, A a b\right )} x\right )} \sqrt {b x + a}}{4 \, a^{3} x^{2}}\right ] \]
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Leaf count of result is larger than twice the leaf count of optimal. 156 vs. \(2 (73) = 146\).
Time = 14.16 (sec) , antiderivative size = 156, normalized size of antiderivative = 1.86 \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=- \frac {A}{2 \sqrt {b} x^{\frac {5}{2}} \sqrt {\frac {a}{b x} + 1}} + \frac {A \sqrt {b}}{4 a x^{\frac {3}{2}} \sqrt {\frac {a}{b x} + 1}} + \frac {3 A b^{\frac {3}{2}}}{4 a^{2} \sqrt {x} \sqrt {\frac {a}{b x} + 1}} - \frac {3 A b^{2} \operatorname {asinh}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{4 a^{\frac {5}{2}}} - \frac {B \sqrt {b} \sqrt {\frac {a}{b x} + 1}}{a \sqrt {x}} + \frac {B b \operatorname {asinh}{\left (\frac {\sqrt {a}}{\sqrt {b} \sqrt {x}} \right )}}{a^{\frac {3}{2}}} \]
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Time = 0.29 (sec) , antiderivative size = 122, normalized size of antiderivative = 1.45 \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=-\frac {1}{8} \, b^{2} {\left (\frac {2 \, {\left ({\left (4 \, B a - 3 \, A b\right )} {\left (b x + a\right )}^{\frac {3}{2}} - {\left (4 \, B a^{2} - 5 \, A a b\right )} \sqrt {b x + a}\right )}}{{\left (b x + a\right )}^{2} a^{2} b - 2 \, {\left (b x + a\right )} a^{3} b + a^{4} b} + \frac {{\left (4 \, B a - 3 \, A b\right )} \log \left (\frac {\sqrt {b x + a} - \sqrt {a}}{\sqrt {b x + a} + \sqrt {a}}\right )}{a^{\frac {5}{2}} b}\right )} \]
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Time = 0.28 (sec) , antiderivative size = 111, normalized size of antiderivative = 1.32 \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=-\frac {\frac {{\left (4 \, B a b^{2} - 3 \, A b^{3}\right )} \arctan \left (\frac {\sqrt {b x + a}}{\sqrt {-a}}\right )}{\sqrt {-a} a^{2}} + \frac {4 \, {\left (b x + a\right )}^{\frac {3}{2}} B a b^{2} - 4 \, \sqrt {b x + a} B a^{2} b^{2} - 3 \, {\left (b x + a\right )}^{\frac {3}{2}} A b^{3} + 5 \, \sqrt {b x + a} A a b^{3}}{a^{2} b^{2} x^{2}}}{4 \, b} \]
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Time = 0.14 (sec) , antiderivative size = 100, normalized size of antiderivative = 1.19 \[ \int \frac {A+B x}{x^3 \sqrt {a+b x}} \, dx=-\frac {\frac {\left (5\,A\,b^2-4\,B\,a\,b\right )\,\sqrt {a+b\,x}}{4\,a}-\frac {\left (3\,A\,b^2-4\,B\,a\,b\right )\,{\left (a+b\,x\right )}^{3/2}}{4\,a^2}}{{\left (a+b\,x\right )}^2-2\,a\,\left (a+b\,x\right )+a^2}-\frac {b\,\mathrm {atanh}\left (\frac {\sqrt {a+b\,x}}{\sqrt {a}}\right )\,\left (3\,A\,b-4\,B\,a\right )}{4\,a^{5/2}} \]
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