Optimal. Leaf size=78 \[ -\frac {(a+b)^3 \text {ArcTan}\left (\frac {\sqrt {b} \cos (x)}{\sqrt {a}}\right )}{\sqrt {a} b^{7/2}}+\frac {\left (a^2+3 a b+3 b^2\right ) \cos (x)}{b^3}-\frac {(a+3 b) \cos ^3(x)}{3 b^2}+\frac {\cos ^5(x)}{5 b} \]
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Rubi [A]
time = 0.06, antiderivative size = 78, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 3, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {3269, 398, 211}
\begin {gather*} \frac {\left (a^2+3 a b+3 b^2\right ) \cos (x)}{b^3}-\frac {(a+b)^3 \text {ArcTan}\left (\frac {\sqrt {b} \cos (x)}{\sqrt {a}}\right )}{\sqrt {a} b^{7/2}}-\frac {(a+3 b) \cos ^3(x)}{3 b^2}+\frac {\cos ^5(x)}{5 b} \end {gather*}
Antiderivative was successfully verified.
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Rule 211
Rule 398
Rule 3269
Rubi steps
\begin {align*} \int \frac {\sin ^7(x)}{a+b \cos ^2(x)} \, dx &=-\text {Subst}\left (\int \frac {\left (1-x^2\right )^3}{a+b x^2} \, dx,x,\cos (x)\right )\\ &=-\text {Subst}\left (\int \left (-\frac {a^2+3 a b+3 b^2}{b^3}+\frac {(a+3 b) x^2}{b^2}-\frac {x^4}{b}+\frac {a^3+3 a^2 b+3 a b^2+b^3}{b^3 \left (a+b x^2\right )}\right ) \, dx,x,\cos (x)\right )\\ &=\frac {\left (a^2+3 a b+3 b^2\right ) \cos (x)}{b^3}-\frac {(a+3 b) \cos ^3(x)}{3 b^2}+\frac {\cos ^5(x)}{5 b}-\frac {(a+b)^3 \text {Subst}\left (\int \frac {1}{a+b x^2} \, dx,x,\cos (x)\right )}{b^3}\\ &=-\frac {(a+b)^3 \tan ^{-1}\left (\frac {\sqrt {b} \cos (x)}{\sqrt {a}}\right )}{\sqrt {a} b^{7/2}}+\frac {\left (a^2+3 a b+3 b^2\right ) \cos (x)}{b^3}-\frac {(a+3 b) \cos ^3(x)}{3 b^2}+\frac {\cos ^5(x)}{5 b}\\ \end {align*}
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Mathematica [A]
time = 0.26, size = 143, normalized size = 1.83 \begin {gather*} -\frac {(a+b)^3 \text {ArcTan}\left (\frac {\sqrt {b}-\sqrt {a+b} \tan \left (\frac {x}{2}\right )}{\sqrt {a}}\right )}{\sqrt {a} b^{7/2}}-\frac {(a+b)^3 \text {ArcTan}\left (\frac {\sqrt {b}+\sqrt {a+b} \tan \left (\frac {x}{2}\right )}{\sqrt {a}}\right )}{\sqrt {a} b^{7/2}}+\frac {\left (8 a^2+22 a b+19 b^2\right ) \cos (x)}{8 b^3}-\frac {(4 a+9 b) \cos (3 x)}{48 b^2}+\frac {\cos (5 x)}{80 b} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.23, size = 94, normalized size = 1.21
method | result | size |
default | \(\frac {\frac {\left (\cos ^{5}\left (x \right )\right ) b^{2}}{5}-\frac {a b \left (\cos ^{3}\left (x \right )\right )}{3}-b^{2} \left (\cos ^{3}\left (x \right )\right )+a^{2} \cos \left (x \right )+3 a b \cos \left (x \right )+3 b^{2} \cos \left (x \right )}{b^{3}}+\frac {\left (-a^{3}-3 a^{2} b -3 b^{2} a -b^{3}\right ) \arctan \left (\frac {b \cos \left (x \right )}{\sqrt {a b}}\right )}{b^{3} \sqrt {a b}}\) | \(94\) |
risch | \(\frac {{\mathrm e}^{i x} a^{2}}{2 b^{3}}+\frac {11 a \,{\mathrm e}^{i x}}{8 b^{2}}+\frac {19 \,{\mathrm e}^{i x}}{16 b}+\frac {{\mathrm e}^{-i x} a^{2}}{2 b^{3}}+\frac {11 \,{\mathrm e}^{-i x} a}{8 b^{2}}+\frac {19 \,{\mathrm e}^{-i x}}{16 b}-\frac {3 i \ln \left ({\mathrm e}^{2 i x}+\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right ) a}{2 \sqrt {a b}\, b}-\frac {3 i \ln \left ({\mathrm e}^{2 i x}+\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right ) a^{2}}{2 \sqrt {a b}\, b^{2}}-\frac {i \ln \left ({\mathrm e}^{2 i x}+\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right )}{2 \sqrt {a b}}+\frac {i \ln \left ({\mathrm e}^{2 i x}-\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right ) a^{3}}{2 \sqrt {a b}\, b^{3}}+\frac {i \ln \left ({\mathrm e}^{2 i x}-\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right )}{2 \sqrt {a b}}-\frac {i \ln \left ({\mathrm e}^{2 i x}+\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right ) a^{3}}{2 \sqrt {a b}\, b^{3}}+\frac {3 i \ln \left ({\mathrm e}^{2 i x}-\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right ) a}{2 \sqrt {a b}\, b}+\frac {3 i \ln \left ({\mathrm e}^{2 i x}-\frac {2 i a \,{\mathrm e}^{i x}}{\sqrt {a b}}+1\right ) a^{2}}{2 \sqrt {a b}\, b^{2}}+\frac {\cos \left (5 x \right )}{80 b}-\frac {3 \cos \left (3 x \right )}{16 b}-\frac {\cos \left (3 x \right ) a}{12 b^{2}}\) | \(370\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.47, size = 87, normalized size = 1.12 \begin {gather*} -\frac {{\left (a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}\right )} \arctan \left (\frac {b \cos \left (x\right )}{\sqrt {a b}}\right )}{\sqrt {a b} b^{3}} + \frac {3 \, b^{2} \cos \left (x\right )^{5} - 5 \, {\left (a b + 3 \, b^{2}\right )} \cos \left (x\right )^{3} + 15 \, {\left (a^{2} + 3 \, a b + 3 \, b^{2}\right )} \cos \left (x\right )}{15 \, b^{3}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.41, size = 225, normalized size = 2.88 \begin {gather*} \left [\frac {6 \, a b^{3} \cos \left (x\right )^{5} - 10 \, {\left (a^{2} b^{2} + 3 \, a b^{3}\right )} \cos \left (x\right )^{3} - 15 \, {\left (a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}\right )} \sqrt {-a b} \log \left (-\frac {b \cos \left (x\right )^{2} + 2 \, \sqrt {-a b} \cos \left (x\right ) - a}{b \cos \left (x\right )^{2} + a}\right ) + 30 \, {\left (a^{3} b + 3 \, a^{2} b^{2} + 3 \, a b^{3}\right )} \cos \left (x\right )}{30 \, a b^{4}}, \frac {3 \, a b^{3} \cos \left (x\right )^{5} - 5 \, {\left (a^{2} b^{2} + 3 \, a b^{3}\right )} \cos \left (x\right )^{3} - 15 \, {\left (a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}\right )} \sqrt {a b} \arctan \left (\frac {\sqrt {a b} \cos \left (x\right )}{a}\right ) + 15 \, {\left (a^{3} b + 3 \, a^{2} b^{2} + 3 \, a b^{3}\right )} \cos \left (x\right )}{15 \, a b^{4}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] Timed out
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Timed out} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.42, size = 99, normalized size = 1.27 \begin {gather*} -\frac {{\left (a^{3} + 3 \, a^{2} b + 3 \, a b^{2} + b^{3}\right )} \arctan \left (\frac {b \cos \left (x\right )}{\sqrt {a b}}\right )}{\sqrt {a b} b^{3}} + \frac {3 \, b^{4} \cos \left (x\right )^{5} - 5 \, a b^{3} \cos \left (x\right )^{3} - 15 \, b^{4} \cos \left (x\right )^{3} + 15 \, a^{2} b^{2} \cos \left (x\right ) + 45 \, a b^{3} \cos \left (x\right ) + 45 \, b^{4} \cos \left (x\right )}{15 \, b^{5}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 2.13, size = 100, normalized size = 1.28 \begin {gather*} \cos \left (x\right )\,\left (\frac {3}{b}+\frac {a\,\left (\frac {a}{b^2}+\frac {3}{b}\right )}{b}\right )-{\cos \left (x\right )}^3\,\left (\frac {a}{3\,b^2}+\frac {1}{b}\right )+\frac {{\cos \left (x\right )}^5}{5\,b}-\frac {\mathrm {atan}\left (\frac {\sqrt {b}\,\cos \left (x\right )\,{\left (a+b\right )}^3}{\sqrt {a}\,\left (a^3+3\,a^2\,b+3\,a\,b^2+b^3\right )}\right )\,{\left (a+b\right )}^3}{\sqrt {a}\,b^{7/2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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