Integrand size = 24, antiderivative size = 83 \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=-\frac {3 d \sqrt {d^2-e^2 x^2}}{2 e}-\frac {(d+e x) \sqrt {d^2-e^2 x^2}}{2 e}+\frac {3 d^2 \arctan \left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )}{2 e} \]
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Time = 0.02 (sec) , antiderivative size = 83, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {685, 655, 223, 209} \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=\frac {3 d^2 \arctan \left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )}{2 e}-\frac {3 d \sqrt {d^2-e^2 x^2}}{2 e}-\frac {(d+e x) \sqrt {d^2-e^2 x^2}}{2 e} \]
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Rule 209
Rule 223
Rule 655
Rule 685
Rubi steps \begin{align*} \text {integral}& = -\frac {(d+e x) \sqrt {d^2-e^2 x^2}}{2 e}+\frac {1}{2} (3 d) \int \frac {d+e x}{\sqrt {d^2-e^2 x^2}} \, dx \\ & = -\frac {3 d \sqrt {d^2-e^2 x^2}}{2 e}-\frac {(d+e x) \sqrt {d^2-e^2 x^2}}{2 e}+\frac {1}{2} \left (3 d^2\right ) \int \frac {1}{\sqrt {d^2-e^2 x^2}} \, dx \\ & = -\frac {3 d \sqrt {d^2-e^2 x^2}}{2 e}-\frac {(d+e x) \sqrt {d^2-e^2 x^2}}{2 e}+\frac {1}{2} \left (3 d^2\right ) \text {Subst}\left (\int \frac {1}{1+e^2 x^2} \, dx,x,\frac {x}{\sqrt {d^2-e^2 x^2}}\right ) \\ & = -\frac {3 d \sqrt {d^2-e^2 x^2}}{2 e}-\frac {(d+e x) \sqrt {d^2-e^2 x^2}}{2 e}+\frac {3 d^2 \tan ^{-1}\left (\frac {e x}{\sqrt {d^2-e^2 x^2}}\right )}{2 e} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 69, normalized size of antiderivative = 0.83 \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=-\frac {(4 d+e x) \sqrt {d^2-e^2 x^2}+6 d^2 \arctan \left (\frac {e x}{\sqrt {d^2}-\sqrt {d^2-e^2 x^2}}\right )}{2 e} \]
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Time = 0.36 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.72
method | result | size |
risch | \(-\frac {\left (e x +4 d \right ) \sqrt {-e^{2} x^{2}+d^{2}}}{2 e}+\frac {3 d^{2} \arctan \left (\frac {\sqrt {e^{2}}\, x}{\sqrt {-e^{2} x^{2}+d^{2}}}\right )}{2 \sqrt {e^{2}}}\) | \(60\) |
default | \(\frac {d^{2} \arctan \left (\frac {\sqrt {e^{2}}\, x}{\sqrt {-e^{2} x^{2}+d^{2}}}\right )}{\sqrt {e^{2}}}+e^{2} \left (-\frac {x \sqrt {-e^{2} x^{2}+d^{2}}}{2 e^{2}}+\frac {d^{2} \arctan \left (\frac {\sqrt {e^{2}}\, x}{\sqrt {-e^{2} x^{2}+d^{2}}}\right )}{2 e^{2} \sqrt {e^{2}}}\right )-\frac {2 d \sqrt {-e^{2} x^{2}+d^{2}}}{e}\) | \(113\) |
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Time = 0.28 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.72 \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=-\frac {6 \, d^{2} \arctan \left (-\frac {d - \sqrt {-e^{2} x^{2} + d^{2}}}{e x}\right ) + \sqrt {-e^{2} x^{2} + d^{2}} {\left (e x + 4 \, d\right )}}{2 \, e} \]
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Time = 0.47 (sec) , antiderivative size = 112, normalized size of antiderivative = 1.35 \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=\begin {cases} \frac {3 d^{2} \left (\begin {cases} \frac {\log {\left (- 2 e^{2} x + 2 \sqrt {- e^{2}} \sqrt {d^{2} - e^{2} x^{2}} \right )}}{\sqrt {- e^{2}}} & \text {for}\: d^{2} \neq 0 \\\frac {x \log {\left (x \right )}}{\sqrt {- e^{2} x^{2}}} & \text {otherwise} \end {cases}\right )}{2} + \sqrt {d^{2} - e^{2} x^{2}} \left (- \frac {2 d}{e} - \frac {x}{2}\right ) & \text {for}\: e^{2} \neq 0 \\\frac {\begin {cases} d^{2} x & \text {for}\: e = 0 \\\frac {\left (d + e x\right )^{3}}{3 e} & \text {otherwise} \end {cases}}{\sqrt {d^{2}}} & \text {otherwise} \end {cases} \]
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Time = 0.28 (sec) , antiderivative size = 62, normalized size of antiderivative = 0.75 \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=\frac {3 \, d^{2} \arcsin \left (\frac {e^{2} x}{d \sqrt {e^{2}}}\right )}{2 \, \sqrt {e^{2}}} - \frac {1}{2} \, \sqrt {-e^{2} x^{2} + d^{2}} x - \frac {2 \, \sqrt {-e^{2} x^{2} + d^{2}} d}{e} \]
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Time = 0.28 (sec) , antiderivative size = 45, normalized size of antiderivative = 0.54 \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=\frac {3 \, d^{2} \arcsin \left (\frac {e x}{d}\right ) \mathrm {sgn}\left (d\right ) \mathrm {sgn}\left (e\right )}{2 \, {\left | e \right |}} - \frac {1}{2} \, \sqrt {-e^{2} x^{2} + d^{2}} {\left (x + \frac {4 \, d}{e}\right )} \]
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Timed out. \[ \int \frac {(d+e x)^2}{\sqrt {d^2-e^2 x^2}} \, dx=\int \frac {{\left (d+e\,x\right )}^2}{\sqrt {d^2-e^2\,x^2}} \,d x \]
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