Integrand size = 15, antiderivative size = 28 \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=\frac {2 \text {arctanh}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right )}{\sqrt {b}} \]
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Time = 0.01 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {65, 223, 212} \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=\frac {2 \text {arctanh}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right )}{\sqrt {b}} \]
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Rule 65
Rule 212
Rule 223
Rubi steps \begin{align*} \text {integral}& = 2 \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,\sqrt {x}\right ) \\ & = 2 \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {\sqrt {x}}{\sqrt {a+b x}}\right ) \\ & = \frac {2 \tanh ^{-1}\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a+b x}}\right )}{\sqrt {b}} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.07 \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=-\frac {2 \log \left (-\sqrt {b} \sqrt {x}+\sqrt {a+b x}\right )}{\sqrt {b}} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(47\) vs. \(2(20)=40\).
Time = 0.08 (sec) , antiderivative size = 48, normalized size of antiderivative = 1.71
method | result | size |
default | \(\frac {\sqrt {x \left (b x +a \right )}\, \ln \left (\frac {\frac {a}{2}+b x}{\sqrt {b}}+\sqrt {b \,x^{2}+a x}\right )}{\sqrt {x}\, \sqrt {b x +a}\, \sqrt {b}}\) | \(48\) |
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none
Time = 0.23 (sec) , antiderivative size = 57, normalized size of antiderivative = 2.04 \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=\left [\frac {\log \left (2 \, b x + 2 \, \sqrt {b x + a} \sqrt {b} \sqrt {x} + a\right )}{\sqrt {b}}, -\frac {2 \, \sqrt {-b} \arctan \left (\frac {\sqrt {b x + a} \sqrt {-b}}{b \sqrt {x}}\right )}{b}\right ] \]
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Time = 0.98 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.79 \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=\frac {2 \operatorname {asinh}{\left (\frac {\sqrt {b} \sqrt {x}}{\sqrt {a}} \right )}}{\sqrt {b}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 41 vs. \(2 (20) = 40\).
Time = 0.55 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.46 \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=-\frac {\log \left (-\frac {\sqrt {b} - \frac {\sqrt {b x + a}}{\sqrt {x}}}{\sqrt {b} + \frac {\sqrt {b x + a}}{\sqrt {x}}}\right )}{\sqrt {b}} \]
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none
Time = 77.66 (sec) , antiderivative size = 38, normalized size of antiderivative = 1.36 \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=-\frac {2 \, \sqrt {b} \log \left ({\left | -\sqrt {b x + a} \sqrt {b} + \sqrt {{\left (b x + a\right )} b - a b} \right |}\right )}{{\left | b \right |}} \]
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Time = 0.05 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.07 \[ \int \frac {1}{\sqrt {x} \sqrt {a+b x}} \, dx=-\frac {4\,\mathrm {atan}\left (\frac {\sqrt {a+b\,x}-\sqrt {a}}{\sqrt {-b}\,\sqrt {x}}\right )}{\sqrt {-b}} \]
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