Integrand size = 19, antiderivative size = 51 \[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\frac {2 \sqrt {a x^2+b x^3}}{x}-2 \sqrt {a} \text {arctanh}\left (\frac {\sqrt {a} x}{\sqrt {a x^2+b x^3}}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.158, Rules used = {2046, 2033, 212} \[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\frac {2 \sqrt {a x^2+b x^3}}{x}-2 \sqrt {a} \text {arctanh}\left (\frac {\sqrt {a} x}{\sqrt {a x^2+b x^3}}\right ) \]
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Rule 212
Rule 2033
Rule 2046
Rubi steps \begin{align*} \text {integral}& = \frac {2 \sqrt {a x^2+b x^3}}{x}+a \int \frac {1}{\sqrt {a x^2+b x^3}} \, dx \\ & = \frac {2 \sqrt {a x^2+b x^3}}{x}-(2 a) \text {Subst}\left (\int \frac {1}{1-a x^2} \, dx,x,\frac {x}{\sqrt {a x^2+b x^3}}\right ) \\ & = \frac {2 \sqrt {a x^2+b x^3}}{x}-2 \sqrt {a} \tanh ^{-1}\left (\frac {\sqrt {a} x}{\sqrt {a x^2+b x^3}}\right ) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.04 \[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\frac {2 x \left (a+b x-\sqrt {a} \sqrt {a+b x} \text {arctanh}\left (\frac {\sqrt {a+b x}}{\sqrt {a}}\right )\right )}{\sqrt {x^2 (a+b x)}} \]
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Time = 1.91 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.71
method | result | size |
pseudoelliptic | \(-\frac {\operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right ) b x +\sqrt {b x +a}\, \sqrt {a}}{x \sqrt {a}}\) | \(36\) |
default | \(-\frac {2 \sqrt {b \,x^{3}+a \,x^{2}}\, \left (\sqrt {a}\, \operatorname {arctanh}\left (\frac {\sqrt {b x +a}}{\sqrt {a}}\right )-\sqrt {b x +a}\right )}{x \sqrt {b x +a}}\) | \(52\) |
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Time = 0.25 (sec) , antiderivative size = 111, normalized size of antiderivative = 2.18 \[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\left [\frac {\sqrt {a} x \log \left (\frac {b x^{2} + 2 \, a x - 2 \, \sqrt {b x^{3} + a x^{2}} \sqrt {a}}{x^{2}}\right ) + 2 \, \sqrt {b x^{3} + a x^{2}}}{x}, \frac {2 \, {\left (\sqrt {-a} x \arctan \left (\frac {\sqrt {b x^{3} + a x^{2}} \sqrt {-a}}{a x}\right ) + \sqrt {b x^{3} + a x^{2}}\right )}}{x}\right ] \]
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\[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\int \frac {\sqrt {x^{2} \left (a + b x\right )}}{x^{2}}\, dx \]
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\[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\int { \frac {\sqrt {b x^{3} + a x^{2}}}{x^{2}} \,d x } \]
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Time = 0.29 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.31 \[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\frac {2 \, a \arctan \left (\frac {\sqrt {b x + a}}{\sqrt {-a}}\right ) \mathrm {sgn}\left (x\right )}{\sqrt {-a}} + 2 \, \sqrt {b x + a} \mathrm {sgn}\left (x\right ) - \frac {2 \, {\left (a \arctan \left (\frac {\sqrt {a}}{\sqrt {-a}}\right ) + \sqrt {-a} \sqrt {a}\right )} \mathrm {sgn}\left (x\right )}{\sqrt {-a}} \]
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Time = 9.15 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.43 \[ \int \frac {\sqrt {a x^2+b x^3}}{x^2} \, dx=\frac {2\,\sqrt {b\,x^3+a\,x^2}}{x}+\frac {\sqrt {a}\,\mathrm {asin}\left (\frac {\sqrt {a}\,\sqrt {\frac {1}{x}}\,1{}\mathrm {i}}{\sqrt {b}}\right )\,\sqrt {b\,x^3+a\,x^2}\,{\left (\frac {1}{x}\right )}^{3/2}\,2{}\mathrm {i}}{\sqrt {b}\,\sqrt {\frac {a}{b\,x}+1}} \]
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