Integrand size = 17, antiderivative size = 55 \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=x \sqrt {-5+7 x^2}+\frac {1}{7} \left (-5+7 x^2\right )^{3/2}-\frac {5 \text {arctanh}\left (\frac {\sqrt {7} x}{\sqrt {-5+7 x^2}}\right )}{\sqrt {7}} \]
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Time = 0.01 (sec) , antiderivative size = 55, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.235, Rules used = {655, 201, 223, 212} \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=-\frac {5 \text {arctanh}\left (\frac {\sqrt {7} x}{\sqrt {7 x^2-5}}\right )}{\sqrt {7}}+\frac {1}{7} \left (7 x^2-5\right )^{3/2}+x \sqrt {7 x^2-5} \]
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Rule 201
Rule 212
Rule 223
Rule 655
Rubi steps \begin{align*} \text {integral}& = \frac {1}{7} \left (-5+7 x^2\right )^{3/2}+2 \int \sqrt {-5+7 x^2} \, dx \\ & = x \sqrt {-5+7 x^2}+\frac {1}{7} \left (-5+7 x^2\right )^{3/2}-5 \int \frac {1}{\sqrt {-5+7 x^2}} \, dx \\ & = x \sqrt {-5+7 x^2}+\frac {1}{7} \left (-5+7 x^2\right )^{3/2}-5 \text {Subst}\left (\int \frac {1}{1-7 x^2} \, dx,x,\frac {x}{\sqrt {-5+7 x^2}}\right ) \\ & = x \sqrt {-5+7 x^2}+\frac {1}{7} \left (-5+7 x^2\right )^{3/2}-\frac {5 \tanh ^{-1}\left (\frac {\sqrt {7} x}{\sqrt {-5+7 x^2}}\right )}{\sqrt {7}} \\ \end{align*}
Time = 0.41 (sec) , antiderivative size = 61, normalized size of antiderivative = 1.11 \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=\frac {1}{7} \sqrt {-5+7 x^2} \left (-5+7 x+7 x^2\right )-\frac {10 \text {arctanh}\left (\frac {\sqrt {-5+7 x^2}}{\sqrt {5}+\sqrt {7} x}\right )}{\sqrt {7}} \]
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Time = 1.93 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.80
method | result | size |
risch | \(\frac {\left (7 x^{2}+7 x -5\right ) \sqrt {7 x^{2}-5}}{7}-\frac {5 \ln \left (x \sqrt {7}+\sqrt {7 x^{2}-5}\right ) \sqrt {7}}{7}\) | \(44\) |
default | \(x \sqrt {7 x^{2}-5}-\frac {5 \ln \left (x \sqrt {7}+\sqrt {7 x^{2}-5}\right ) \sqrt {7}}{7}+\frac {\left (7 x^{2}-5\right )^{\frac {3}{2}}}{7}\) | \(45\) |
trager | \(\left (x^{2}+x -\frac {5}{7}\right ) \sqrt {7 x^{2}-5}+\frac {5 \operatorname {RootOf}\left (\textit {\_Z}^{2}-7\right ) \ln \left (-\operatorname {RootOf}\left (\textit {\_Z}^{2}-7\right ) \sqrt {7 x^{2}-5}+7 x \right )}{7}\) | \(48\) |
meijerg | \(\frac {5 i \sqrt {\operatorname {signum}\left (-1+\frac {7 x^{2}}{5}\right )}\, \sqrt {7}\, \left (-\frac {2 i \sqrt {35}\, \sqrt {\pi }\, x \sqrt {-\frac {7 x^{2}}{5}+1}}{5}-2 i \sqrt {\pi }\, \arcsin \left (\frac {x \sqrt {7}\, \sqrt {5}}{5}\right )\right )}{14 \sqrt {\pi }\, \sqrt {-\operatorname {signum}\left (-1+\frac {7 x^{2}}{5}\right )}}+\frac {15 \sqrt {5}\, \sqrt {\operatorname {signum}\left (-1+\frac {7 x^{2}}{5}\right )}\, \left (\frac {4 \sqrt {\pi }}{3}-\frac {2 \sqrt {\pi }\, \left (2-\frac {14 x^{2}}{5}\right ) \sqrt {-\frac {7 x^{2}}{5}+1}}{3}\right )}{28 \sqrt {\pi }\, \sqrt {-\operatorname {signum}\left (-1+\frac {7 x^{2}}{5}\right )}}\) | \(126\) |
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Time = 0.26 (sec) , antiderivative size = 50, normalized size of antiderivative = 0.91 \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=\frac {1}{7} \, {\left (7 \, x^{2} + 7 \, x - 5\right )} \sqrt {7 \, x^{2} - 5} + \frac {5}{14} \, \sqrt {7} \log \left (-2 \, \sqrt {7} \sqrt {7 \, x^{2} - 5} x + 14 \, x^{2} - 5\right ) \]
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Time = 0.09 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.20 \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=x^{2} \sqrt {7 x^{2} - 5} + x \sqrt {7 x^{2} - 5} - \frac {5 \sqrt {7 x^{2} - 5}}{7} - \frac {5 \sqrt {7} \log {\left (7 x + \sqrt {7} \sqrt {7 x^{2} - 5} \right )}}{7} \]
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Time = 0.28 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.85 \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=\frac {1}{7} \, {\left (7 \, x^{2} - 5\right )}^{\frac {3}{2}} + \sqrt {7 \, x^{2} - 5} x - \frac {5}{7} \, \sqrt {7} \log \left (2 \, \sqrt {7} \sqrt {7 \, x^{2} - 5} + 14 \, x\right ) \]
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Time = 0.26 (sec) , antiderivative size = 43, normalized size of antiderivative = 0.78 \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=\frac {1}{7} \, {\left (7 \, {\left (x + 1\right )} x - 5\right )} \sqrt {7 \, x^{2} - 5} + \frac {5}{7} \, \sqrt {7} \log \left ({\left | -\sqrt {7} x + \sqrt {7 \, x^{2} - 5} \right |}\right ) \]
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Time = 0.38 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.80 \[ \int (2+3 x) \sqrt {-5+7 x^2} \, dx=x\,\sqrt {7\,x^2-5}-\frac {5\,\sqrt {7}\,\ln \left (\sqrt {7}\,x+\sqrt {7\,x^2-5}\right )}{7}+\frac {{\left (7\,x^2-5\right )}^{3/2}}{7} \]
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