Optimal. Leaf size=79 \[ -\frac {\tan ^{-1}\left (\frac {x}{\sqrt [4]{2} \sqrt [4]{-a-b}}\right )}{2\ 2^{3/4} (-a-b)^{3/4}}-\frac {\tanh ^{-1}\left (\frac {x}{\sqrt [4]{2} \sqrt [4]{-a-b}}\right )}{2\ 2^{3/4} (-a-b)^{3/4}} \]
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Rubi [A] time = 0.06, antiderivative size = 79, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {212, 206, 203} \[ -\frac {\tan ^{-1}\left (\frac {x}{\sqrt [4]{2} \sqrt [4]{-a-b}}\right )}{2\ 2^{3/4} (-a-b)^{3/4}}-\frac {\tanh ^{-1}\left (\frac {x}{\sqrt [4]{2} \sqrt [4]{-a-b}}\right )}{2\ 2^{3/4} (-a-b)^{3/4}} \]
Antiderivative was successfully verified.
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Rule 203
Rule 206
Rule 212
Rubi steps
\begin {align*} \int \frac {1}{2 a+2 b+x^4} \, dx &=-\frac {\int \frac {1}{\sqrt {2} \sqrt {-a-b}-x^2} \, dx}{2 \sqrt {2} \sqrt {-a-b}}-\frac {\int \frac {1}{\sqrt {2} \sqrt {-a-b}+x^2} \, dx}{2 \sqrt {2} \sqrt {-a-b}}\\ &=-\frac {\tan ^{-1}\left (\frac {x}{\sqrt [4]{2} \sqrt [4]{-a-b}}\right )}{2\ 2^{3/4} (-a-b)^{3/4}}-\frac {\tanh ^{-1}\left (\frac {x}{\sqrt [4]{2} \sqrt [4]{-a-b}}\right )}{2\ 2^{3/4} (-a-b)^{3/4}}\\ \end {align*}
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Mathematica [A] time = 0.10, size = 128, normalized size = 1.62 \[ \frac {-\log \left (-2 \sqrt [4]{2} x \sqrt [4]{a+b}+2 \sqrt {a+b}+\sqrt {2} x^2\right )+\log \left (2 \sqrt [4]{2} x \sqrt [4]{a+b}+2 \sqrt {a+b}+\sqrt {2} x^2\right )-2 \tan ^{-1}\left (1-\frac {\sqrt [4]{2} x}{\sqrt [4]{a+b}}\right )+2 \tan ^{-1}\left (\frac {\sqrt [4]{2} x}{\sqrt [4]{a+b}}+1\right )}{8 \sqrt [4]{2} (a+b)^{3/4}} \]
Antiderivative was successfully verified.
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fricas [B] time = 0.72, size = 294, normalized size = 3.72 \[ \left (\frac {1}{8}\right )^{\frac {1}{4}} \left (-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}\right )^{\frac {1}{4}} \arctan \left (-4 \, \left (\frac {1}{8}\right )^{\frac {3}{4}} {\left (a^{2} + 2 \, a b + b^{2}\right )} x \left (-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}\right )^{\frac {3}{4}} + 4 \, \left (\frac {1}{8}\right )^{\frac {3}{4}} {\left (a^{2} + 2 \, a b + b^{2}\right )} \sqrt {x^{2} + 2 \, \sqrt {\frac {1}{2}} {\left (a^{2} + 2 \, a b + b^{2}\right )} \sqrt {-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}}} \left (-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}\right )^{\frac {3}{4}}\right ) + \frac {1}{4} \, \left (\frac {1}{8}\right )^{\frac {1}{4}} \left (-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}\right )^{\frac {1}{4}} \log \left (2 \, \left (\frac {1}{8}\right )^{\frac {1}{4}} {\left (a + b\right )} \left (-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}\right )^{\frac {1}{4}} + x\right ) - \frac {1}{4} \, \left (\frac {1}{8}\right )^{\frac {1}{4}} \left (-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}\right )^{\frac {1}{4}} \log \left (-2 \, \left (\frac {1}{8}\right )^{\frac {1}{4}} {\left (a + b\right )} \left (-\frac {1}{a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}}\right )^{\frac {1}{4}} + x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.17, size = 219, normalized size = 2.77 \[ \frac {{\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} \arctan \left (\frac {\sqrt {2} {\left (2 \, x + \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}\right )}}{2 \, {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}}\right )}{4 \, {\left (\sqrt {2} a + \sqrt {2} b\right )}} + \frac {{\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} \arctan \left (\frac {\sqrt {2} {\left (2 \, x - \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}\right )}}{2 \, {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}}\right )}{4 \, {\left (\sqrt {2} a + \sqrt {2} b\right )}} + \frac {{\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} \log \left (x^{2} + \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} x + \sqrt {2 \, a + 2 \, b}\right )}{8 \, {\left (\sqrt {2} a + \sqrt {2} b\right )}} - \frac {{\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} \log \left (x^{2} - \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} x + \sqrt {2 \, a + 2 \, b}\right )}{8 \, {\left (\sqrt {2} a + \sqrt {2} b\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.01, size = 137, normalized size = 1.73 \[ \frac {\sqrt {2}\, \arctan \left (\frac {\sqrt {2}\, x}{\left (2 a +2 b \right )^{\frac {1}{4}}}-1\right )}{4 \left (2 a +2 b \right )^{\frac {3}{4}}}+\frac {\sqrt {2}\, \arctan \left (\frac {\sqrt {2}\, x}{\left (2 a +2 b \right )^{\frac {1}{4}}}+1\right )}{4 \left (2 a +2 b \right )^{\frac {3}{4}}}+\frac {\sqrt {2}\, \ln \left (\frac {x^{2}+\left (2 a +2 b \right )^{\frac {1}{4}} \sqrt {2}\, x +\sqrt {2 a +2 b}}{x^{2}-\left (2 a +2 b \right )^{\frac {1}{4}} \sqrt {2}\, x +\sqrt {2 a +2 b}}\right )}{8 \left (2 a +2 b \right )^{\frac {3}{4}}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [B] time = 3.01, size = 179, normalized size = 2.27 \[ \frac {\sqrt {2} \arctan \left (\frac {\sqrt {2} {\left (2 \, x + \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}\right )}}{2 \, {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}}\right )}{4 \, {\left (2 \, a + 2 \, b\right )}^{\frac {3}{4}}} + \frac {\sqrt {2} \arctan \left (\frac {\sqrt {2} {\left (2 \, x - \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}\right )}}{2 \, {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}}}\right )}{4 \, {\left (2 \, a + 2 \, b\right )}^{\frac {3}{4}}} + \frac {\sqrt {2} \log \left (x^{2} + \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} x + \sqrt {2 \, a + 2 \, b}\right )}{8 \, {\left (2 \, a + 2 \, b\right )}^{\frac {3}{4}}} - \frac {\sqrt {2} \log \left (x^{2} - \sqrt {2} {\left (2 \, a + 2 \, b\right )}^{\frac {1}{4}} x + \sqrt {2 \, a + 2 \, b}\right )}{8 \, {\left (2 \, a + 2 \, b\right )}^{\frac {3}{4}}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.12, size = 121, normalized size = 1.53 \[ \frac {2^{1/4}\,\mathrm {atan}\left (\frac {2^{1/4}\,x}{\left (\frac {\sqrt {2}\,a}{{\left (-a-b\right )}^{3/2}}+\frac {\sqrt {2}\,b}{{\left (-a-b\right )}^{3/2}}\right )\,{\left (-a-b\right )}^{3/4}}\right )}{4\,{\left (-a-b\right )}^{3/4}}+\frac {2^{1/4}\,\mathrm {atanh}\left (\frac {2^{1/4}\,x}{\left (\frac {\sqrt {2}\,a}{{\left (-a-b\right )}^{3/2}}+\frac {\sqrt {2}\,b}{{\left (-a-b\right )}^{3/2}}\right )\,{\left (-a-b\right )}^{3/4}}\right )}{4\,{\left (-a-b\right )}^{3/4}} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.43, size = 42, normalized size = 0.53 \[ \operatorname {RootSum} {\left (t^{4} \left (2048 a^{3} + 6144 a^{2} b + 6144 a b^{2} + 2048 b^{3}\right ) + 1, \left (t \mapsto t \log {\left (8 t a + 8 t b + x \right )} \right )\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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