Optimal. Leaf size=81 \[ \frac {\log \left (2 \sqrt {-d} \sqrt {f} x+e+2 f x^2\right )}{4 \sqrt {-d} \sqrt {f}}-\frac {\log \left (-2 \sqrt {-d} \sqrt {f} x+e+2 f x^2\right )}{4 \sqrt {-d} \sqrt {f}} \]
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Rubi [A] time = 0.06, antiderivative size = 81, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, integrand size = 37, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.081, Rules used = {6, 1164, 628} \[ \frac {\log \left (2 \sqrt {-d} \sqrt {f} x+e+2 f x^2\right )}{4 \sqrt {-d} \sqrt {f}}-\frac {\log \left (-2 \sqrt {-d} \sqrt {f} x+e+2 f x^2\right )}{4 \sqrt {-d} \sqrt {f}} \]
Antiderivative was successfully verified.
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Rule 6
Rule 628
Rule 1164
Rubi steps
\begin {align*} \int \frac {e-2 f x^2}{e^2+4 d f x^2+4 e f x^2+4 f^2 x^4} \, dx &=\int \frac {e-2 f x^2}{e^2+4 (d+e) f x^2+4 f^2 x^4} \, dx\\ &=-\frac {\int \frac {\frac {\sqrt {-d}}{\sqrt {f}}+2 x}{-\frac {e}{2 f}-\frac {\sqrt {-d} x}{\sqrt {f}}-x^2} \, dx}{4 \sqrt {-d} \sqrt {f}}-\frac {\int \frac {\frac {\sqrt {-d}}{\sqrt {f}}-2 x}{-\frac {e}{2 f}+\frac {\sqrt {-d} x}{\sqrt {f}}-x^2} \, dx}{4 \sqrt {-d} \sqrt {f}}\\ &=-\frac {\log \left (e-2 \sqrt {-d} \sqrt {f} x+2 f x^2\right )}{4 \sqrt {-d} \sqrt {f}}+\frac {\log \left (e+2 \sqrt {-d} \sqrt {f} x+2 f x^2\right )}{4 \sqrt {-d} \sqrt {f}}\\ \end {align*}
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Mathematica [B] time = 0.12, size = 191, normalized size = 2.36 \[ \frac {-\frac {\left (\sqrt {d} \sqrt {d+2 e}-d-2 e\right ) \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {f} x}{\sqrt {-\sqrt {d} \sqrt {d+2 e}+d+e}}\right )}{\sqrt {-\sqrt {d} \sqrt {d+2 e}+d+e}}-\frac {\left (\sqrt {d} \sqrt {d+2 e}+d+2 e\right ) \tan ^{-1}\left (\frac {\sqrt {2} \sqrt {f} x}{\sqrt {\sqrt {d} \sqrt {d+2 e}+d+e}}\right )}{\sqrt {\sqrt {d} \sqrt {d+2 e}+d+e}}}{2 \sqrt {2} \sqrt {d} \sqrt {f} \sqrt {d+2 e}} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.75, size = 141, normalized size = 1.74 \[ \left [-\frac {\sqrt {-d f} \log \left (\frac {4 \, f^{2} x^{4} - 4 \, {\left (d - e\right )} f x^{2} + e^{2} + 4 \, {\left (2 \, f x^{3} + e x\right )} \sqrt {-d f}}{4 \, f^{2} x^{4} + 4 \, {\left (d + e\right )} f x^{2} + e^{2}}\right )}{4 \, d f}, -\frac {\sqrt {d f} \arctan \left (\frac {\sqrt {d f} x}{d}\right ) - \sqrt {d f} \arctan \left (\frac {{\left (2 \, f x^{3} + {\left (2 \, d + e\right )} x\right )} \sqrt {d f}}{d e}\right )}{2 \, d f}\right ] \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: TypeError} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.05, size = 394, normalized size = 4.86 \[ -\frac {\sqrt {2}\, d f \arctanh \left (\frac {\sqrt {2}\, f x}{\sqrt {-d f -e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}\right )}{4 \sqrt {\left (d +2 e \right ) d \,f^{2}}\, \sqrt {-d f -e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}-\frac {\sqrt {2}\, d f \arctan \left (\frac {\sqrt {2}\, f x}{\sqrt {d f +e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}\right )}{4 \sqrt {\left (d +2 e \right ) d \,f^{2}}\, \sqrt {d f +e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}-\frac {\sqrt {2}\, e f \arctanh \left (\frac {\sqrt {2}\, f x}{\sqrt {-d f -e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}\right )}{2 \sqrt {\left (d +2 e \right ) d \,f^{2}}\, \sqrt {-d f -e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}-\frac {\sqrt {2}\, e f \arctan \left (\frac {\sqrt {2}\, f x}{\sqrt {d f +e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}\right )}{2 \sqrt {\left (d +2 e \right ) d \,f^{2}}\, \sqrt {d f +e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}+\frac {\sqrt {2}\, \arctanh \left (\frac {\sqrt {2}\, f x}{\sqrt {-d f -e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}\right )}{4 \sqrt {-d f -e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}-\frac {\sqrt {2}\, \arctan \left (\frac {\sqrt {2}\, f x}{\sqrt {d f +e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}}\right )}{4 \sqrt {d f +e f +\sqrt {\left (d +2 e \right ) d \,f^{2}}}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ -\int \frac {2 \, f x^{2} - e}{4 \, f^{2} x^{4} + 4 \, d f x^{2} + 4 \, e f x^{2} + e^{2}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 3.11, size = 50, normalized size = 0.62 \[ \frac {\mathrm {atan}\left (\frac {2\,f^{3/2}\,x^3+2\,d\,\sqrt {f}\,x+e\,\sqrt {f}\,x}{\sqrt {d}\,e}\right )-\mathrm {atan}\left (\frac {\sqrt {f}\,x}{\sqrt {d}}\right )}{2\,\sqrt {d}\,\sqrt {f}} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.56, size = 70, normalized size = 0.86 \[ \frac {\sqrt {- \frac {1}{d f}} \log {\left (- d x \sqrt {- \frac {1}{d f}} + \frac {e}{2 f} + x^{2} \right )}}{4} - \frac {\sqrt {- \frac {1}{d f}} \log {\left (d x \sqrt {- \frac {1}{d f}} + \frac {e}{2 f} + x^{2} \right )}}{4} \]
Verification of antiderivative is not currently implemented for this CAS.
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