Optimal. Leaf size=79 \[ \frac {\tanh ^{-1}(\sin (x))}{2 a}+\frac {b^2 \tanh ^{-1}(\sin (x))}{a^3}+\frac {b \sqrt {a^2+b^2} \tanh ^{-1}\left (\frac {a \cos (x)-b \sin (x)}{\sqrt {a^2+b^2}}\right )}{a^3}-\frac {b \sec (x)}{a^2}+\frac {\sec (x) \tan (x)}{2 a} \]
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Rubi [A]
time = 0.14, antiderivative size = 79, normalized size of antiderivative = 1.00, number of steps
used = 9, number of rules used = 7, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.538, Rules used = {3599, 3189,
3853, 3855, 3183, 3153, 212} \begin {gather*} \frac {b^2 \tanh ^{-1}(\sin (x))}{a^3}-\frac {b \sec (x)}{a^2}+\frac {b \sqrt {a^2+b^2} \tanh ^{-1}\left (\frac {a \cos (x)-b \sin (x)}{\sqrt {a^2+b^2}}\right )}{a^3}+\frac {\tanh ^{-1}(\sin (x))}{2 a}+\frac {\tan (x) \sec (x)}{2 a} \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 3153
Rule 3183
Rule 3189
Rule 3599
Rule 3853
Rule 3855
Rubi steps
\begin {align*} \int \frac {\sec ^3(x)}{a+b \cot (x)} \, dx &=-\int \frac {\sec ^2(x) \tan (x)}{-b \cos (x)-a \sin (x)} \, dx\\ &=-\int \left (-\frac {\sec ^3(x)}{a}+\frac {b \sec ^2(x)}{a (b \cos (x)+a \sin (x))}\right ) \, dx\\ &=\frac {\int \sec ^3(x) \, dx}{a}-\frac {b \int \frac {\sec ^2(x)}{b \cos (x)+a \sin (x)} \, dx}{a}\\ &=-\frac {b \sec (x)}{a^2}+\frac {\sec (x) \tan (x)}{2 a}+\frac {\int \sec (x) \, dx}{2 a}+\frac {b^2 \int \sec (x) \, dx}{a^3}-\frac {\left (b \left (a^2+b^2\right )\right ) \int \frac {1}{b \cos (x)+a \sin (x)} \, dx}{a^3}\\ &=\frac {\tanh ^{-1}(\sin (x))}{2 a}+\frac {b^2 \tanh ^{-1}(\sin (x))}{a^3}-\frac {b \sec (x)}{a^2}+\frac {\sec (x) \tan (x)}{2 a}+\frac {\left (b \left (a^2+b^2\right )\right ) \text {Subst}\left (\int \frac {1}{a^2+b^2-x^2} \, dx,x,a \cos (x)-b \sin (x)\right )}{a^3}\\ &=\frac {\tanh ^{-1}(\sin (x))}{2 a}+\frac {b^2 \tanh ^{-1}(\sin (x))}{a^3}+\frac {b \sqrt {a^2+b^2} \tanh ^{-1}\left (\frac {a \cos (x)-b \sin (x)}{\sqrt {a^2+b^2}}\right )}{a^3}-\frac {b \sec (x)}{a^2}+\frac {\sec (x) \tan (x)}{2 a}\\ \end {align*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(192\) vs. \(2(79)=158\).
time = 0.50, size = 192, normalized size = 2.43 \begin {gather*} -\frac {8 b \sqrt {a^2+b^2} \tanh ^{-1}\left (\frac {-a+b \tan \left (\frac {x}{2}\right )}{\sqrt {a^2+b^2}}\right )+\sec ^2(x) \left (4 a b \cos (x)+a^2 \log \left (\cos \left (\frac {x}{2}\right )-\sin \left (\frac {x}{2}\right )\right )+2 b^2 \log \left (\cos \left (\frac {x}{2}\right )-\sin \left (\frac {x}{2}\right )\right )+\left (a^2+2 b^2\right ) \cos (2 x) \left (\log \left (\cos \left (\frac {x}{2}\right )-\sin \left (\frac {x}{2}\right )\right )-\log \left (\cos \left (\frac {x}{2}\right )+\sin \left (\frac {x}{2}\right )\right )\right )-a^2 \log \left (\cos \left (\frac {x}{2}\right )+\sin \left (\frac {x}{2}\right )\right )-2 b^2 \log \left (\cos \left (\frac {x}{2}\right )+\sin \left (\frac {x}{2}\right )\right )-2 a^2 \sin (x)\right )}{4 a^3} \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(149\) vs.
\(2(71)=142\).
time = 0.50, size = 150, normalized size = 1.90
method | result | size |
default | \(\frac {1}{2 a \left (\tan \left (\frac {x}{2}\right )-1\right )^{2}}-\frac {-a -2 b}{2 a^{2} \left (\tan \left (\frac {x}{2}\right )-1\right )}+\frac {\left (-a^{2}-2 b^{2}\right ) \ln \left (\tan \left (\frac {x}{2}\right )-1\right )}{2 a^{3}}+\frac {2 b \sqrt {a^{2}+b^{2}}\, \arctanh \left (\frac {-2 b \tan \left (\frac {x}{2}\right )+2 a}{2 \sqrt {a^{2}+b^{2}}}\right )}{a^{3}}-\frac {1}{2 a \left (\tan \left (\frac {x}{2}\right )+1\right )^{2}}-\frac {-a +2 b}{2 a^{2} \left (\tan \left (\frac {x}{2}\right )+1\right )}+\frac {\left (a^{2}+2 b^{2}\right ) \ln \left (\tan \left (\frac {x}{2}\right )+1\right )}{2 a^{3}}\) | \(150\) |
risch | \(-\frac {i {\mathrm e}^{3 i x} a +2 \,{\mathrm e}^{3 i x} b -i {\mathrm e}^{i x} a +2 \,{\mathrm e}^{i x} b}{\left ({\mathrm e}^{2 i x}+1\right )^{2} a^{2}}+\frac {\sqrt {a^{2}+b^{2}}\, b \ln \left ({\mathrm e}^{i x}-\frac {i b -a}{\sqrt {a^{2}+b^{2}}}\right )}{a^{3}}-\frac {\sqrt {a^{2}+b^{2}}\, b \ln \left ({\mathrm e}^{i x}+\frac {i b -a}{\sqrt {a^{2}+b^{2}}}\right )}{a^{3}}+\frac {\ln \left ({\mathrm e}^{i x}+i\right )}{2 a}+\frac {\ln \left ({\mathrm e}^{i x}+i\right ) b^{2}}{a^{3}}-\frac {\ln \left ({\mathrm e}^{i x}-i\right )}{2 a}-\frac {\ln \left ({\mathrm e}^{i x}-i\right ) b^{2}}{a^{3}}\) | \(192\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] Leaf count of result is larger than twice the leaf count of optimal. 203 vs.
\(2 (71) = 142\).
time = 0.50, size = 203, normalized size = 2.57 \begin {gather*} -\frac {2 \, b - \frac {a \sin \left (x\right )}{\cos \left (x\right ) + 1} - \frac {2 \, b \sin \left (x\right )^{2}}{{\left (\cos \left (x\right ) + 1\right )}^{2}} - \frac {a \sin \left (x\right )^{3}}{{\left (\cos \left (x\right ) + 1\right )}^{3}}}{a^{2} - \frac {2 \, a^{2} \sin \left (x\right )^{2}}{{\left (\cos \left (x\right ) + 1\right )}^{2}} + \frac {a^{2} \sin \left (x\right )^{4}}{{\left (\cos \left (x\right ) + 1\right )}^{4}}} + \frac {{\left (a^{2} + 2 \, b^{2}\right )} \log \left (\frac {\sin \left (x\right )}{\cos \left (x\right ) + 1} + 1\right )}{2 \, a^{3}} - \frac {{\left (a^{2} + 2 \, b^{2}\right )} \log \left (\frac {\sin \left (x\right )}{\cos \left (x\right ) + 1} - 1\right )}{2 \, a^{3}} + \frac {{\left (a^{2} b + b^{3}\right )} \log \left (\frac {a - \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1} + \sqrt {a^{2} + b^{2}}}{a - \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1} - \sqrt {a^{2} + b^{2}}}\right )}{\sqrt {a^{2} + b^{2}} a^{3}} \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. 166 vs.
\(2 (71) = 142\).
time = 5.98, size = 166, normalized size = 2.10 \begin {gather*} \frac {2 \, \sqrt {a^{2} + b^{2}} b \cos \left (x\right )^{2} \log \left (\frac {2 \, a b \cos \left (x\right ) \sin \left (x\right ) - {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} - a^{2} - 2 \, b^{2} - 2 \, \sqrt {a^{2} + b^{2}} {\left (a \cos \left (x\right ) - b \sin \left (x\right )\right )}}{2 \, a b \cos \left (x\right ) \sin \left (x\right ) - {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} + a^{2}}\right ) + {\left (a^{2} + 2 \, b^{2}\right )} \cos \left (x\right )^{2} \log \left (\sin \left (x\right ) + 1\right ) - {\left (a^{2} + 2 \, b^{2}\right )} \cos \left (x\right )^{2} \log \left (-\sin \left (x\right ) + 1\right ) - 4 \, a b \cos \left (x\right ) + 2 \, a^{2} \sin \left (x\right )}{4 \, a^{3} \cos \left (x\right )^{2}} \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 {\sec ^{3}{\left (x \right )}}{a + b \cot {\left (x \right )}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 158 vs.
\(2 (71) = 142\).
time = 0.44, size = 158, normalized size = 2.00 \begin {gather*} \frac {{\left (a^{2} + 2 \, b^{2}\right )} \log \left ({\left | \tan \left (\frac {1}{2} \, x\right ) + 1 \right |}\right )}{2 \, a^{3}} - \frac {{\left (a^{2} + 2 \, b^{2}\right )} \log \left ({\left | \tan \left (\frac {1}{2} \, x\right ) - 1 \right |}\right )}{2 \, a^{3}} + \frac {{\left (a^{2} b + b^{3}\right )} \log \left (\frac {{\left | 2 \, b \tan \left (\frac {1}{2} \, x\right ) - 2 \, a - 2 \, \sqrt {a^{2} + b^{2}} \right |}}{{\left | 2 \, b \tan \left (\frac {1}{2} \, x\right ) - 2 \, a + 2 \, \sqrt {a^{2} + b^{2}} \right |}}\right )}{\sqrt {a^{2} + b^{2}} a^{3}} + \frac {a \tan \left (\frac {1}{2} \, x\right )^{3} + 2 \, b \tan \left (\frac {1}{2} \, x\right )^{2} + a \tan \left (\frac {1}{2} \, x\right ) - 2 \, b}{{\left (\tan \left (\frac {1}{2} \, x\right )^{2} - 1\right )}^{2} a^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.58, size = 346, normalized size = 4.38 \begin {gather*} \frac {\frac {\mathrm {tan}\left (\frac {x}{2}\right )}{a}-\frac {2\,b}{a^2}+\frac {{\mathrm {tan}\left (\frac {x}{2}\right )}^3}{a}+\frac {2\,b\,{\mathrm {tan}\left (\frac {x}{2}\right )}^2}{a^2}}{{\mathrm {tan}\left (\frac {x}{2}\right )}^4-2\,{\mathrm {tan}\left (\frac {x}{2}\right )}^2+1}+\frac {\mathrm {atanh}\left (\frac {24\,b^3\,\mathrm {tan}\left (\frac {x}{2}\right )}{8\,a^2\,b+24\,b^3+\frac {16\,b^5}{a^2}}+\frac {16\,b^5\,\mathrm {tan}\left (\frac {x}{2}\right )}{8\,a^4\,b+24\,a^2\,b^3+16\,b^5}+\frac {8\,a\,b\,\mathrm {tan}\left (\frac {x}{2}\right )}{8\,a\,b+\frac {24\,b^3}{a}+\frac {16\,b^5}{a^3}}\right )\,\left (a^2+2\,b^2\right )}{a^3}-\frac {2\,b\,\mathrm {atanh}\left (\frac {16\,b^3\,\sqrt {a^2+b^2}}{32\,b^4\,\mathrm {tan}\left (\frac {x}{2}\right )+16\,a\,b^3+\frac {16\,b^5}{a}+32\,a^2\,b^2\,\mathrm {tan}\left (\frac {x}{2}\right )}+\frac {32\,b^2\,\mathrm {tan}\left (\frac {x}{2}\right )\,\sqrt {a^2+b^2}}{16\,b^3+\frac {16\,b^5}{a^2}+\frac {32\,b^4\,\mathrm {tan}\left (\frac {x}{2}\right )}{a}+32\,a\,b^2\,\mathrm {tan}\left (\frac {x}{2}\right )}+\frac {16\,b^4\,\mathrm {tan}\left (\frac {x}{2}\right )\,\sqrt {a^2+b^2}}{32\,\mathrm {tan}\left (\frac {x}{2}\right )\,a^3\,b^2+16\,a^2\,b^3+32\,\mathrm {tan}\left (\frac {x}{2}\right )\,a\,b^4+16\,b^5}\right )\,\sqrt {a^2+b^2}}{a^3} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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