Optimal. Leaf size=124 \[ \frac {\tan ^{-1}\left (\frac {2-\sqrt {2} \sqrt {2-b x^2}}{\sqrt [4]{2} \sqrt {b} x \sqrt [4]{2-b x^2}}\right )}{2\ 2^{3/4} \sqrt {b}}+\frac {\tanh ^{-1}\left (\frac {2+\sqrt {2} \sqrt {2-b x^2}}{\sqrt [4]{2} \sqrt {b} x \sqrt [4]{2-b x^2}}\right )}{2\ 2^{3/4} \sqrt {b}} \]
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Rubi [A]
time = 0.01, antiderivative size = 124, normalized size of antiderivative = 1.00, number of steps
used = 1, number of rules used = 1, integrand size = 23, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.043, Rules used = {406}
\begin {gather*} \frac {\text {ArcTan}\left (\frac {2-\sqrt {2} \sqrt {2-b x^2}}{\sqrt [4]{2} \sqrt {b} x \sqrt [4]{2-b x^2}}\right )}{2\ 2^{3/4} \sqrt {b}}+\frac {\tanh ^{-1}\left (\frac {\sqrt {2} \sqrt {2-b x^2}+2}{\sqrt [4]{2} \sqrt {b} x \sqrt [4]{2-b x^2}}\right )}{2\ 2^{3/4} \sqrt {b}} \end {gather*}
Antiderivative was successfully verified.
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Rule 406
Rubi steps
\begin {align*} \int \frac {1}{\sqrt [4]{2-b x^2} \left (4-b x^2\right )} \, dx &=\frac {\tan ^{-1}\left (\frac {2-\sqrt {2} \sqrt {2-b x^2}}{\sqrt [4]{2} \sqrt {b} x \sqrt [4]{2-b x^2}}\right )}{2\ 2^{3/4} \sqrt {b}}+\frac {\tanh ^{-1}\left (\frac {2+\sqrt {2} \sqrt {2-b x^2}}{\sqrt [4]{2} \sqrt {b} x \sqrt [4]{2-b x^2}}\right )}{2\ 2^{3/4} \sqrt {b}}\\ \end {align*}
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Mathematica [A]
time = 0.22, size = 123, normalized size = 0.99 \begin {gather*} \frac {\tan ^{-1}\left (\frac {2^{3/4} b x^2-4 \sqrt [4]{2} \sqrt {2-b x^2}}{4 \sqrt {b} x \sqrt [4]{2-b x^2}}\right )+\tanh ^{-1}\left (\frac {2\ 2^{3/4} \sqrt {b} x \sqrt [4]{2-b x^2}}{\sqrt {2} b x^2+4 \sqrt {2-b x^2}}\right )}{4\ 2^{3/4} \sqrt {b}} \end {gather*}
Antiderivative was successfully verified.
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Maple [F]
time = 0.03, size = 0, normalized size = 0.00 \[\int \frac {1}{\left (-b \,x^{2}+2\right )^{\frac {1}{4}} \left (-b \,x^{2}+4\right )}\, dx\]
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 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 776 vs.
\(2 (93) = 186\).
time = 6.06, size = 776, normalized size = 6.26 \begin {gather*} \frac {1}{4} \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} \frac {1}{b^{2}}^{\frac {1}{4}} \arctan \left (-\frac {2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b^{2} \frac {1}{b^{2}}^{\frac {1}{4}} x^{3} + b^{2} x^{4} + 8 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (-b x^{2} + 2\right )}^{\frac {3}{4}} b^{2} \frac {1}{b^{2}}^{\frac {3}{4}} x - 4 \, b x^{2} + 4 \, \sqrt {\frac {1}{2}} {\left (b^{2} x^{2} - 4 \, b\right )} \sqrt {-b x^{2} + 2} \sqrt {\frac {1}{b^{2}}} - 2 \, \sqrt {\frac {1}{2}} {\left (4 \, {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b x^{2} + 2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (b^{3} x^{3} - 4 \, b^{2} x\right )} \frac {1}{b^{2}}^{\frac {3}{4}} + 16 \, \sqrt {\frac {1}{2}} {\left (-b x^{2} + 2\right )}^{\frac {3}{4}} b \sqrt {\frac {1}{b^{2}}} - \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} {\left (b^{2} x^{3} + 4 \, b x\right )} \sqrt {-b x^{2} + 2} \frac {1}{b^{2}}^{\frac {1}{4}}\right )} \sqrt {-\frac {2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b^{2} \frac {1}{b^{2}}^{\frac {3}{4}} x + \sqrt {\frac {1}{2}} b^{2} \sqrt {\frac {1}{b^{2}}} x^{2} + 2 \, \sqrt {-b x^{2} + 2}}{b x^{2} - 4}}}{b^{2} x^{4} + 8 \, b x^{2} - 16}\right ) + \frac {1}{4} \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} \frac {1}{b^{2}}^{\frac {1}{4}} \arctan \left (-\frac {2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b^{2} \frac {1}{b^{2}}^{\frac {1}{4}} x^{3} - b^{2} x^{4} + 8 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (-b x^{2} + 2\right )}^{\frac {3}{4}} b^{2} \frac {1}{b^{2}}^{\frac {3}{4}} x + 4 \, b x^{2} - 4 \, \sqrt {\frac {1}{2}} {\left (b^{2} x^{2} - 4 \, b\right )} \sqrt {-b x^{2} + 2} \sqrt {\frac {1}{b^{2}}} + 2 \, \sqrt {\frac {1}{2}} {\left (4 \, {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b x^{2} - 2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (b^{3} x^{3} - 4 \, b^{2} x\right )} \frac {1}{b^{2}}^{\frac {3}{4}} + 16 \, \sqrt {\frac {1}{2}} {\left (-b x^{2} + 2\right )}^{\frac {3}{4}} b \sqrt {\frac {1}{b^{2}}} + \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} {\left (b^{2} x^{3} + 4 \, b x\right )} \sqrt {-b x^{2} + 2} \frac {1}{b^{2}}^{\frac {1}{4}}\right )} \sqrt {\frac {2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b^{2} \frac {1}{b^{2}}^{\frac {3}{4}} x - \sqrt {\frac {1}{2}} b^{2} \sqrt {\frac {1}{b^{2}}} x^{2} - 2 \, \sqrt {-b x^{2} + 2}}{b x^{2} - 4}}}{b^{2} x^{4} + 8 \, b x^{2} - 16}\right ) + \frac {1}{16} \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} \frac {1}{b^{2}}^{\frac {1}{4}} \log \left (-\frac {2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b^{2} \frac {1}{b^{2}}^{\frac {3}{4}} x + \sqrt {\frac {1}{2}} b^{2} \sqrt {\frac {1}{b^{2}}} x^{2} + 2 \, \sqrt {-b x^{2} + 2}}{2 \, {\left (b x^{2} - 4\right )}}\right ) - \frac {1}{16} \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {1}{4}} \frac {1}{b^{2}}^{\frac {1}{4}} \log \left (\frac {2 \, \sqrt {2} \left (\frac {1}{2}\right )^{\frac {3}{4}} {\left (-b x^{2} + 2\right )}^{\frac {1}{4}} b^{2} \frac {1}{b^{2}}^{\frac {3}{4}} x - \sqrt {\frac {1}{2}} b^{2} \sqrt {\frac {1}{b^{2}}} x^{2} - 2 \, \sqrt {-b x^{2} + 2}}{2 \, {\left (b x^{2} - 4\right )}}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} - \int \frac {1}{b x^{2} \sqrt [4]{- b x^{2} + 2} - 4 \sqrt [4]{- b x^{2} + 2}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} -\int \frac {1}{{\left (2-b\,x^2\right )}^{1/4}\,\left (b\,x^2-4\right )} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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