Optimal. Leaf size=67 \[ \frac {a \left (a^2-b^2\right ) \sin (c+d x)}{d}+3 a^2 b x+\frac {3 a b^2 \tanh ^{-1}(\sin (c+d x))}{d}+\frac {b^2 \sin (c+d x) (a+b \sec (c+d x))}{d} \]
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Rubi [A] time = 0.11, antiderivative size = 67, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, integrand size = 19, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.263, Rules used = {3842, 4047, 8, 4045, 3770} \[ \frac {a \left (a^2-b^2\right ) \sin (c+d x)}{d}+3 a^2 b x+\frac {3 a b^2 \tanh ^{-1}(\sin (c+d x))}{d}+\frac {b^2 \sin (c+d x) (a+b \sec (c+d x))}{d} \]
Antiderivative was successfully verified.
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Rule 8
Rule 3770
Rule 3842
Rule 4045
Rule 4047
Rubi steps
\begin {align*} \int \cos (c+d x) (a+b \sec (c+d x))^3 \, dx &=\frac {b^2 (a+b \sec (c+d x)) \sin (c+d x)}{d}+\int \cos (c+d x) \left (a \left (a^2-b^2\right )+3 a^2 b \sec (c+d x)+3 a b^2 \sec ^2(c+d x)\right ) \, dx\\ &=\frac {b^2 (a+b \sec (c+d x)) \sin (c+d x)}{d}+\left (3 a^2 b\right ) \int 1 \, dx+\int \cos (c+d x) \left (a \left (a^2-b^2\right )+3 a b^2 \sec ^2(c+d x)\right ) \, dx\\ &=3 a^2 b x+\frac {a \left (a^2-b^2\right ) \sin (c+d x)}{d}+\frac {b^2 (a+b \sec (c+d x)) \sin (c+d x)}{d}+\left (3 a b^2\right ) \int \sec (c+d x) \, dx\\ &=3 a^2 b x+\frac {3 a b^2 \tanh ^{-1}(\sin (c+d x))}{d}+\frac {a \left (a^2-b^2\right ) \sin (c+d x)}{d}+\frac {b^2 (a+b \sec (c+d x)) \sin (c+d x)}{d}\\ \end {align*}
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Mathematica [A] time = 0.34, size = 88, normalized size = 1.31 \[ \frac {a^3 \sin (c+d x)+3 a b \left (a c+a d x-b \log \left (\cos \left (\frac {1}{2} (c+d x)\right )-\sin \left (\frac {1}{2} (c+d x)\right )\right )+b \log \left (\sin \left (\frac {1}{2} (c+d x)\right )+\cos \left (\frac {1}{2} (c+d x)\right )\right )\right )+b^3 \tan (c+d x)}{d} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.49, size = 94, normalized size = 1.40 \[ \frac {6 \, a^{2} b d x \cos \left (d x + c\right ) + 3 \, a b^{2} \cos \left (d x + c\right ) \log \left (\sin \left (d x + c\right ) + 1\right ) - 3 \, a b^{2} \cos \left (d x + c\right ) \log \left (-\sin \left (d x + c\right ) + 1\right ) + 2 \, {\left (a^{3} \cos \left (d x + c\right ) + b^{3}\right )} \sin \left (d x + c\right )}{2 \, d \cos \left (d x + c\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.23, size = 131, normalized size = 1.96 \[ \frac {3 \, {\left (d x + c\right )} a^{2} b + 3 \, a b^{2} \log \left ({\left | \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) + 1 \right |}\right ) - 3 \, a b^{2} \log \left ({\left | \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - 1 \right |}\right ) + \frac {2 \, {\left (a^{3} \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{3} - b^{3} \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{3} - a^{3} \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - b^{3} \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )\right )}}{\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{4} - 1}}{d} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.64, size = 68, normalized size = 1.01 \[ 3 a^{2} b x +\frac {3 b^{2} a \ln \left (\sec \left (d x +c \right )+\tan \left (d x +c \right )\right )}{d}+\frac {a^{3} \sin \left (d x +c \right )}{d}+\frac {b^{3} \tan \left (d x +c \right )}{d}+\frac {3 a^{2} b c}{d} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.37, size = 66, normalized size = 0.99 \[ \frac {6 \, {\left (d x + c\right )} a^{2} b + 3 \, a b^{2} {\left (\log \left (\sin \left (d x + c\right ) + 1\right ) - \log \left (\sin \left (d x + c\right ) - 1\right )\right )} + 2 \, a^{3} \sin \left (d x + c\right ) + 2 \, b^{3} \tan \left (d x + c\right )}{2 \, d} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.92, size = 97, normalized size = 1.45 \[ \frac {a^3\,\sin \left (c+d\,x\right )}{d}+\frac {b^3\,\sin \left (c+d\,x\right )}{d\,\cos \left (c+d\,x\right )}+\frac {6\,a^2\,b\,\mathrm {atan}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )}{d}+\frac {6\,a\,b^2\,\mathrm {atanh}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )}{d} \]
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 \[ \int \left (a + b \sec {\left (c + d x \right )}\right )^{3} \cos {\left (c + d x \right )}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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