Optimal. Leaf size=28 \[ \frac {\tanh ^{-1}\left (\frac {\sqrt {a+b \cos ^4(x)}}{\sqrt {a}}\right )}{2 \sqrt {a}} \]
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Rubi [A]
time = 0.04, antiderivative size = 28, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 4, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {3308, 272, 65,
214} \begin {gather*} \frac {\tanh ^{-1}\left (\frac {\sqrt {a+b \cos ^4(x)}}{\sqrt {a}}\right )}{2 \sqrt {a}} \end {gather*}
Antiderivative was successfully verified.
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Rule 65
Rule 214
Rule 272
Rule 3308
Rubi steps
\begin {align*} \int \frac {\tan (x)}{\sqrt {a+b \cos ^4(x)}} \, dx &=-\left (\frac {1}{2} \text {Subst}\left (\int \frac {1}{x \sqrt {a+b x^2}} \, dx,x,\cos ^2(x)\right )\right )\\ &=-\left (\frac {1}{4} \text {Subst}\left (\int \frac {1}{x \sqrt {a+b x}} \, dx,x,\cos ^4(x)\right )\right )\\ &=-\frac {\text {Subst}\left (\int \frac {1}{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b \cos ^4(x)}\right )}{2 b}\\ &=\frac {\tanh ^{-1}\left (\frac {\sqrt {a+b \cos ^4(x)}}{\sqrt {a}}\right )}{2 \sqrt {a}}\\ \end {align*}
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Mathematica [A]
time = 0.02, size = 28, normalized size = 1.00 \begin {gather*} \frac {\tanh ^{-1}\left (\frac {\sqrt {a+b \cos ^4(x)}}{\sqrt {a}}\right )}{2 \sqrt {a}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.06, size = 31, normalized size = 1.11
method | result | size |
derivativedivides | \(\frac {\ln \left (\frac {2 a +2 \sqrt {a}\, \sqrt {a +b \left (\cos ^{4}\left (x \right )\right )}}{\cos \left (x \right )^{2}}\right )}{2 \sqrt {a}}\) | \(31\) |
default | \(\frac {\ln \left (\frac {2 a +2 \sqrt {a}\, \sqrt {a +b \left (\cos ^{4}\left (x \right )\right )}}{\cos \left (x \right )^{2}}\right )}{2 \sqrt {a}}\) | \(31\) |
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 [A]
time = 0.45, size = 67, normalized size = 2.39 \begin {gather*} \left [\frac {\log \left (\frac {b \cos \left (x\right )^{4} + 2 \, \sqrt {b \cos \left (x\right )^{4} + a} \sqrt {a} + 2 \, a}{\cos \left (x\right )^{4}}\right )}{4 \, \sqrt {a}}, -\frac {\sqrt {-a} \arctan \left (\frac {\sqrt {b \cos \left (x\right )^{4} + a} \sqrt {-a}}{a}\right )}{2 \, a}\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 {\tan {\left (x \right )}}{\sqrt {a + b \cos ^{4}{\left (x \right )}}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.42, size = 24, normalized size = 0.86 \begin {gather*} -\frac {\arctan \left (\frac {\sqrt {b \cos \left (x\right )^{4} + a}}{\sqrt {-a}}\right )}{2 \, \sqrt {-a}} \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 = -0.04 \begin {gather*} \int \frac {\mathrm {tan}\left (x\right )}{\sqrt {b\,{\cos \left (x\right )}^4+a}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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