Optimal. Leaf size=75 \[ -\frac {b^4 \, _2F_1\left (\frac {1}{2},\frac {4-n}{2};\frac {6-n}{2};\cos ^2(c+d x)\right ) (b \sec (c+d x))^{-4+n} \sin (c+d x)}{d (4-n) \sqrt {\sin ^2(c+d x)}} \]
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Rubi [A]
time = 0.04, antiderivative size = 75, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 19, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.158, Rules used = {16, 3857, 2722}
\begin {gather*} -\frac {b^4 \sin (c+d x) (b \sec (c+d x))^{n-4} \, _2F_1\left (\frac {1}{2},\frac {4-n}{2};\frac {6-n}{2};\cos ^2(c+d x)\right )}{d (4-n) \sqrt {\sin ^2(c+d x)}} \end {gather*}
Antiderivative was successfully verified.
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Rule 16
Rule 2722
Rule 3857
Rubi steps
\begin {align*} \int \cos ^3(c+d x) (b \sec (c+d x))^n \, dx &=b^3 \int (b \sec (c+d x))^{-3+n} \, dx\\ &=\left (b^3 \left (\frac {\cos (c+d x)}{b}\right )^n (b \sec (c+d x))^n\right ) \int \left (\frac {\cos (c+d x)}{b}\right )^{3-n} \, dx\\ &=-\frac {\cos ^4(c+d x) \, _2F_1\left (\frac {1}{2},\frac {4-n}{2};\frac {6-n}{2};\cos ^2(c+d x)\right ) (b \sec (c+d x))^n \sin (c+d x)}{d (4-n) \sqrt {\sin ^2(c+d x)}}\\ \end {align*}
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Mathematica [A]
time = 0.11, size = 73, normalized size = 0.97 \begin {gather*} \frac {\cos ^3(c+d x) \cot (c+d x) \, _2F_1\left (\frac {1}{2},\frac {1}{2} (-3+n);\frac {1}{2} (-1+n);\sec ^2(c+d x)\right ) (b \sec (c+d x))^n \sqrt {-\tan ^2(c+d x)}}{d (-3+n)} \end {gather*}
Antiderivative was successfully verified.
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Maple [F]
time = 0.55, size = 0, normalized size = 0.00 \[\int \left (\cos ^{3}\left (d x +c \right )\right ) \left (b \sec \left (d x +c \right )\right )^{n}\, dx\]
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 [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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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 [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 {\cos \left (c+d\,x\right )}^3\,{\left (\frac {b}{\cos \left (c+d\,x\right )}\right )}^n \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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