Integrand size = 27, antiderivative size = 66 \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=-\sqrt {d^2-e^2 x^2}+2 d \arctan \left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )-d \text {arctanh}\left (\frac {\sqrt {d^2-e^2 x^2}}{d}\right ) \]
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Time = 0.08 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.259, Rules used = {1823, 858, 223, 209, 272, 65, 214} \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=2 d \arctan \left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )-d \text {arctanh}\left (\frac {\sqrt {d^2-e^2 x^2}}{d}\right )-\sqrt {d^2-e^2 x^2} \]
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Rule 65
Rule 209
Rule 214
Rule 223
Rule 272
Rule 858
Rule 1823
Rubi steps \begin{align*} \text {integral}& = -\sqrt {d^2-e^2 x^2}-\frac {\int \frac {-d^2 e^2-2 d e^3 x}{x \sqrt {d^2-e^2 x^2}} \, dx}{e^2} \\ & = -\sqrt {d^2-e^2 x^2}+d^2 \int \frac {1}{x \sqrt {d^2-e^2 x^2}} \, dx+(2 d e) \int \frac {1}{\sqrt {d^2-e^2 x^2}} \, dx \\ & = -\sqrt {d^2-e^2 x^2}+\frac {1}{2} d^2 \text {Subst}\left (\int \frac {1}{x \sqrt {d^2-e^2 x}} \, dx,x,x^2\right )+(2 d e) \text {Subst}\left (\int \frac {1}{1+e^2 x^2} \, dx,x,\frac {x}{\sqrt {d^2-e^2 x^2}}\right ) \\ & = -\sqrt {d^2-e^2 x^2}+2 d \tan ^{-1}\left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )-\frac {d^2 \text {Subst}\left (\int \frac {1}{\frac {d^2}{e^2}-\frac {x^2}{e^2}} \, dx,x,\sqrt {d^2-e^2 x^2}\right )}{e^2} \\ & = -\sqrt {d^2-e^2 x^2}+2 d \tan ^{-1}\left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )-d \tanh ^{-1}\left (\frac {\sqrt {d^2-e^2 x^2}}{d}\right ) \\ \end{align*}
Time = 0.17 (sec) , antiderivative size = 100, normalized size of antiderivative = 1.52 \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=-\sqrt {d^2-e^2 x^2}-4 d \arctan \left (\frac {e x}{\sqrt {d^2}-\sqrt {d^2-e^2 x^2}}\right )-\sqrt {d^2} \log (x)+\sqrt {d^2} \log \left (\sqrt {d^2}-\sqrt {d^2-e^2 x^2}\right ) \]
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Time = 0.35 (sec) , antiderivative size = 91, normalized size of antiderivative = 1.38
method | result | size |
default | \(-\sqrt {-e^{2} x^{2}+d^{2}}-\frac {d^{2} \ln \left (\frac {2 d^{2}+2 \sqrt {d^{2}}\, \sqrt {-e^{2} x^{2}+d^{2}}}{x}\right )}{\sqrt {d^{2}}}+\frac {2 d e \arctan \left (\frac {\sqrt {e^{2}}\, x}{\sqrt {-e^{2} x^{2}+d^{2}}}\right )}{\sqrt {e^{2}}}\) | \(91\) |
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Time = 0.29 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.11 \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=-4 \, d \arctan \left (-\frac {d - \sqrt {-e^{2} x^{2} + d^{2}}}{e x}\right ) + d \log \left (-\frac {d - \sqrt {-e^{2} x^{2} + d^{2}}}{x}\right ) - \sqrt {-e^{2} x^{2} + d^{2}} \]
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Result contains complex when optimal does not.
Time = 2.29 (sec) , antiderivative size = 144, normalized size of antiderivative = 2.18 \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=d^{2} \left (\begin {cases} - \frac {\operatorname {acosh}{\left (\frac {d}{e x} \right )}}{d} & \text {for}\: \left |{\frac {d^{2}}{e^{2} x^{2}}}\right | > 1 \\\frac {i \operatorname {asin}{\left (\frac {d}{e x} \right )}}{d} & \text {otherwise} \end {cases}\right ) + 2 d e \left (\begin {cases} \frac {\log {\left (- 2 e^{2} x + 2 \sqrt {- e^{2}} \sqrt {d^{2} - e^{2} x^{2}} \right )}}{\sqrt {- e^{2}}} & \text {for}\: d^{2} \neq 0 \wedge e^{2} \neq 0 \\\frac {x \log {\left (x \right )}}{\sqrt {- e^{2} x^{2}}} & \text {for}\: e^{2} \neq 0 \\\frac {x}{\sqrt {d^{2}}} & \text {otherwise} \end {cases}\right ) + e^{2} \left (\begin {cases} - \frac {\sqrt {d^{2} - e^{2} x^{2}}}{e^{2}} & \text {for}\: e^{2} \neq 0 \\\frac {x^{2}}{2 \sqrt {d^{2}}} & \text {otherwise} \end {cases}\right ) \]
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Time = 0.29 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.14 \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=\frac {2 \, d e \arcsin \left (\frac {e^{2} x}{d \sqrt {e^{2}}}\right )}{\sqrt {e^{2}}} - d \log \left (\frac {2 \, d^{2}}{{\left | x \right |}} + \frac {2 \, \sqrt {-e^{2} x^{2} + d^{2}} d}{{\left | x \right |}}\right ) - \sqrt {-e^{2} x^{2} + d^{2}} \]
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Time = 0.29 (sec) , antiderivative size = 78, normalized size of antiderivative = 1.18 \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=\frac {2 \, d e \arcsin \left (\frac {e x}{d}\right ) \mathrm {sgn}\left (d\right ) \mathrm {sgn}\left (e\right )}{{\left | e \right |}} - \frac {d e \log \left (\frac {{\left | -2 \, d e - 2 \, \sqrt {-e^{2} x^{2} + d^{2}} {\left | e \right |} \right |}}{2 \, e^{2} {\left | x \right |}}\right )}{{\left | e \right |}} - \sqrt {-e^{2} x^{2} + d^{2}} \]
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Timed out. \[ \int \frac {(d+e x)^2}{x \sqrt {d^2-e^2 x^2}} \, dx=\int \frac {{\left (d+e\,x\right )}^2}{x\,\sqrt {d^2-e^2\,x^2}} \,d x \]
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