Integrand size = 24, antiderivative size = 75 \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=-\frac {b (b c-2 a d) \sqrt {c+d x^2}}{d^2}+\frac {b^2 \left (c+d x^2\right )^{3/2}}{3 d^2}-\frac {a^2 \text {arctanh}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{\sqrt {c}} \]
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Time = 0.05 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {457, 90, 65, 214} \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=-\frac {a^2 \text {arctanh}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{\sqrt {c}}-\frac {b \sqrt {c+d x^2} (b c-2 a d)}{d^2}+\frac {b^2 \left (c+d x^2\right )^{3/2}}{3 d^2} \]
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Rule 65
Rule 90
Rule 214
Rule 457
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {(a+b x)^2}{x \sqrt {c+d x}} \, dx,x,x^2\right ) \\ & = \frac {1}{2} \text {Subst}\left (\int \left (-\frac {b (b c-2 a d)}{d \sqrt {c+d x}}+\frac {a^2}{x \sqrt {c+d x}}+\frac {b^2 \sqrt {c+d x}}{d}\right ) \, dx,x,x^2\right ) \\ & = -\frac {b (b c-2 a d) \sqrt {c+d x^2}}{d^2}+\frac {b^2 \left (c+d x^2\right )^{3/2}}{3 d^2}+\frac {1}{2} a^2 \text {Subst}\left (\int \frac {1}{x \sqrt {c+d x}} \, dx,x,x^2\right ) \\ & = -\frac {b (b c-2 a d) \sqrt {c+d x^2}}{d^2}+\frac {b^2 \left (c+d x^2\right )^{3/2}}{3 d^2}+\frac {a^2 \text {Subst}\left (\int \frac {1}{-\frac {c}{d}+\frac {x^2}{d}} \, dx,x,\sqrt {c+d x^2}\right )}{d} \\ & = -\frac {b (b c-2 a d) \sqrt {c+d x^2}}{d^2}+\frac {b^2 \left (c+d x^2\right )^{3/2}}{3 d^2}-\frac {a^2 \tanh ^{-1}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{\sqrt {c}} \\ \end{align*}
Time = 0.07 (sec) , antiderivative size = 63, normalized size of antiderivative = 0.84 \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=\frac {b \sqrt {c+d x^2} \left (-2 b c+6 a d+b d x^2\right )}{3 d^2}-\frac {a^2 \text {arctanh}\left (\frac {\sqrt {c+d x^2}}{\sqrt {c}}\right )}{\sqrt {c}} \]
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Time = 2.86 (sec) , antiderivative size = 63, normalized size of antiderivative = 0.84
method | result | size |
pseudoelliptic | \(-\frac {a^{2} d^{2} \operatorname {arctanh}\left (\frac {\sqrt {d \,x^{2}+c}}{\sqrt {c}}\right )-2 \sqrt {d \,x^{2}+c}\, b \left (-\frac {c^{\frac {3}{2}} b}{3}+d \sqrt {c}\, \left (\frac {b \,x^{2}}{6}+a \right )\right )}{\sqrt {c}\, d^{2}}\) | \(63\) |
default | \(b^{2} \left (\frac {x^{2} \sqrt {d \,x^{2}+c}}{3 d}-\frac {2 c \sqrt {d \,x^{2}+c}}{3 d^{2}}\right )-\frac {a^{2} \ln \left (\frac {2 c +2 \sqrt {c}\, \sqrt {d \,x^{2}+c}}{x}\right )}{\sqrt {c}}+\frac {2 a b \sqrt {d \,x^{2}+c}}{d}\) | \(86\) |
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Time = 0.27 (sec) , antiderivative size = 157, normalized size of antiderivative = 2.09 \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=\left [\frac {3 \, a^{2} \sqrt {c} d^{2} \log \left (-\frac {d x^{2} - 2 \, \sqrt {d x^{2} + c} \sqrt {c} + 2 \, c}{x^{2}}\right ) + 2 \, {\left (b^{2} c d x^{2} - 2 \, b^{2} c^{2} + 6 \, a b c d\right )} \sqrt {d x^{2} + c}}{6 \, c d^{2}}, \frac {3 \, a^{2} \sqrt {-c} d^{2} \arctan \left (\frac {\sqrt {-c}}{\sqrt {d x^{2} + c}}\right ) + {\left (b^{2} c d x^{2} - 2 \, b^{2} c^{2} + 6 \, a b c d\right )} \sqrt {d x^{2} + c}}{3 \, c d^{2}}\right ] \]
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Time = 5.29 (sec) , antiderivative size = 109, normalized size of antiderivative = 1.45 \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=\frac {\begin {cases} \frac {2 a^{2} \operatorname {atan}{\left (\frac {\sqrt {c + d x^{2}}}{\sqrt {- c}} \right )}}{\sqrt {- c}} + \frac {2 b^{2} \left (c + d x^{2}\right )^{\frac {3}{2}}}{3 d^{2}} + \frac {2 \sqrt {c + d x^{2}} \cdot \left (2 a b d - b^{2} c\right )}{d^{2}} & \text {for}\: d \neq 0 \\\frac {a^{2} \log {\left (x^{2} \right )} + 2 a b x^{2} + \frac {b^{2} x^{4}}{2}}{\sqrt {c}} & \text {otherwise} \end {cases}}{2} \]
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Time = 0.19 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.00 \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=\frac {\sqrt {d x^{2} + c} b^{2} x^{2}}{3 \, d} - \frac {a^{2} \operatorname {arsinh}\left (\frac {c}{\sqrt {c d} {\left | x \right |}}\right )}{\sqrt {c}} - \frac {2 \, \sqrt {d x^{2} + c} b^{2} c}{3 \, d^{2}} + \frac {2 \, \sqrt {d x^{2} + c} a b}{d} \]
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Time = 0.32 (sec) , antiderivative size = 82, normalized size of antiderivative = 1.09 \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=\frac {a^{2} \arctan \left (\frac {\sqrt {d x^{2} + c}}{\sqrt {-c}}\right )}{\sqrt {-c}} + \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} b^{2} d^{4} - 3 \, \sqrt {d x^{2} + c} b^{2} c d^{4} + 6 \, \sqrt {d x^{2} + c} a b d^{5}}{3 \, d^{6}} \]
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Time = 5.27 (sec) , antiderivative size = 77, normalized size of antiderivative = 1.03 \[ \int \frac {\left (a+b x^2\right )^2}{x \sqrt {c+d x^2}} \, dx=\frac {b^2\,{\left (d\,x^2+c\right )}^{3/2}}{3\,d^2}-\frac {a^2\,\mathrm {atanh}\left (\frac {\sqrt {d\,x^2+c}}{\sqrt {c}}\right )}{\sqrt {c}}-\left (\frac {2\,b^2\,c-2\,a\,b\,d}{d^2}-\frac {b^2\,c}{d^2}\right )\,\sqrt {d\,x^2+c} \]
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