Optimal. Leaf size=116 \[ \frac {3 i \sqrt {2} a^{7/2} \tanh ^{-1}\left (\frac {\sqrt {a+i a \tan (c+d x)}}{\sqrt {2} \sqrt {a}}\right )}{d}-\frac {3 i a^3 \sqrt {a+i a \tan (c+d x)}}{d}-\frac {i a^3 (a+i a \tan (c+d x))^{3/2}}{d (a-i a \tan (c+d x))} \]
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Rubi [A]
time = 0.07, antiderivative size = 116, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 26, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.192, Rules used = {3568, 43, 52,
65, 212} \begin {gather*} \frac {3 i \sqrt {2} a^{7/2} \tanh ^{-1}\left (\frac {\sqrt {a+i a \tan (c+d x)}}{\sqrt {2} \sqrt {a}}\right )}{d}-\frac {i a^3 (a+i a \tan (c+d x))^{3/2}}{d (a-i a \tan (c+d x))}-\frac {3 i a^3 \sqrt {a+i a \tan (c+d x)}}{d} \end {gather*}
Antiderivative was successfully verified.
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Rule 43
Rule 52
Rule 65
Rule 212
Rule 3568
Rubi steps
\begin {align*} \int \cos ^2(c+d x) (a+i a \tan (c+d x))^{7/2} \, dx &=-\frac {\left (i a^3\right ) \text {Subst}\left (\int \frac {(a+x)^{3/2}}{(a-x)^2} \, dx,x,i a \tan (c+d x)\right )}{d}\\ &=-\frac {i a^3 (a+i a \tan (c+d x))^{3/2}}{d (a-i a \tan (c+d x))}+\frac {\left (3 i a^3\right ) \text {Subst}\left (\int \frac {\sqrt {a+x}}{a-x} \, dx,x,i a \tan (c+d x)\right )}{2 d}\\ &=-\frac {3 i a^3 \sqrt {a+i a \tan (c+d x)}}{d}-\frac {i a^3 (a+i a \tan (c+d x))^{3/2}}{d (a-i a \tan (c+d x))}+\frac {\left (3 i a^4\right ) \text {Subst}\left (\int \frac {1}{(a-x) \sqrt {a+x}} \, dx,x,i a \tan (c+d x)\right )}{d}\\ &=-\frac {3 i a^3 \sqrt {a+i a \tan (c+d x)}}{d}-\frac {i a^3 (a+i a \tan (c+d x))^{3/2}}{d (a-i a \tan (c+d x))}+\frac {\left (6 i a^4\right ) \text {Subst}\left (\int \frac {1}{2 a-x^2} \, dx,x,\sqrt {a+i a \tan (c+d x)}\right )}{d}\\ &=\frac {3 i \sqrt {2} a^{7/2} \tanh ^{-1}\left (\frac {\sqrt {a+i a \tan (c+d x)}}{\sqrt {2} \sqrt {a}}\right )}{d}-\frac {3 i a^3 \sqrt {a+i a \tan (c+d x)}}{d}-\frac {i a^3 (a+i a \tan (c+d x))^{3/2}}{d (a-i a \tan (c+d x))}\\ \end {align*}
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Mathematica [A]
time = 1.55, size = 137, normalized size = 1.18 \begin {gather*} -\frac {i \sqrt {2} e^{-4 i (c+d x)} \sqrt {\frac {e^{i (c+d x)}}{1+e^{2 i (c+d x)}}} \left (3 e^{i (c+d x)}+e^{3 i (c+d x)}-3 \sqrt {1+e^{2 i (c+d x)}} \sinh ^{-1}\left (e^{i (c+d x)}\right )\right ) (a+i a \tan (c+d x))^{7/2}}{d \sec ^{\frac {7}{2}}(c+d x)} \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Both result and optimal contain complex but leaf count of result is larger than twice
the leaf count of optimal. 411 vs. \(2 (96 ) = 192\).
time = 1.01, size = 412, normalized size = 3.55
method | result | size |
default | \(-\frac {\sqrt {\frac {a \left (i \sin \left (d x +c \right )+\cos \left (d x +c \right )\right )}{\cos \left (d x +c \right )}}\, \left (3 i \sqrt {2}\, \left (-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}\right )^{\frac {3}{2}} \arctanh \left (\frac {\sqrt {-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}}\, \sin \left (d x +c \right ) \sqrt {2}}{2 \cos \left (d x +c \right )}\right ) \cos \left (d x +c \right ) \sin \left (d x +c \right )+3 i \sqrt {2}\, \arctanh \left (\frac {\sqrt {-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}}\, \sin \left (d x +c \right ) \sqrt {2}}{2 \cos \left (d x +c \right )}\right ) \left (-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}\right )^{\frac {3}{2}} \sin \left (d x +c \right )+3 \sqrt {2}\, \left (-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}\right )^{\frac {3}{2}} \arctan \left (\frac {\sqrt {-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}}\, \sqrt {2}}{2}\right ) \cos \left (d x +c \right ) \sin \left (d x +c \right )+3 \sqrt {2}\, \arctan \left (\frac {\sqrt {-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}}\, \sqrt {2}}{2}\right ) \left (-\frac {2 \cos \left (d x +c \right )}{1+\cos \left (d x +c \right )}\right )^{\frac {3}{2}} \sin \left (d x +c \right )+8 i \left (\cos ^{4}\left (d x +c \right )\right )-4 i \left (\cos ^{3}\left (d x +c \right )\right )-8 \sin \left (d x +c \right ) \left (\cos ^{3}\left (d x +c \right )\right )+4 \left (\cos ^{2}\left (d x +c \right )\right ) \sin \left (d x +c \right )-4 i \cos \left (d x +c \right )-4 \sin \left (d x +c \right ) \cos \left (d x +c \right )\right ) a^{3}}{2 d \left (i \sin \left (d x +c \right )+\cos \left (d x +c \right )-1\right ) \cos \left (d x +c \right )}\) | \(412\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.50, size = 117, normalized size = 1.01 \begin {gather*} -\frac {i \, {\left (3 \, \sqrt {2} a^{\frac {9}{2}} \log \left (-\frac {\sqrt {2} \sqrt {a} - \sqrt {i \, a \tan \left (d x + c\right ) + a}}{\sqrt {2} \sqrt {a} + \sqrt {i \, a \tan \left (d x + c\right ) + a}}\right ) + 4 \, \sqrt {i \, a \tan \left (d x + c\right ) + a} a^{4} - \frac {4 \, \sqrt {i \, a \tan \left (d x + c\right ) + a} a^{5}}{i \, a \tan \left (d x + c\right ) - a}\right )}}{2 \, a d} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Both result and optimal contain complex but leaf count of result is larger than twice
the leaf count of optimal. 235 vs. \(2 (89) = 178\).
time = 0.44, size = 235, normalized size = 2.03 \begin {gather*} -\frac {3 \, \sqrt {2} \sqrt {-\frac {a^{7}}{d^{2}}} d \log \left (\frac {4 \, {\left (a^{4} e^{\left (i \, d x + i \, c\right )} + \sqrt {-\frac {a^{7}}{d^{2}}} {\left (i \, d e^{\left (2 i \, d x + 2 i \, c\right )} + i \, d\right )} \sqrt {\frac {a}{e^{\left (2 i \, d x + 2 i \, c\right )} + 1}}\right )} e^{\left (-i \, d x - i \, c\right )}}{a^{3}}\right ) - 3 \, \sqrt {2} \sqrt {-\frac {a^{7}}{d^{2}}} d \log \left (\frac {4 \, {\left (a^{4} e^{\left (i \, d x + i \, c\right )} + \sqrt {-\frac {a^{7}}{d^{2}}} {\left (-i \, d e^{\left (2 i \, d x + 2 i \, c\right )} - i \, d\right )} \sqrt {\frac {a}{e^{\left (2 i \, d x + 2 i \, c\right )} + 1}}\right )} e^{\left (-i \, d x - i \, c\right )}}{a^{3}}\right ) + 2 \, \sqrt {2} {\left (i \, a^{3} e^{\left (3 i \, d x + 3 i \, c\right )} + 3 i \, a^{3} e^{\left (i \, d x + i \, c\right )}\right )} \sqrt {\frac {a}{e^{\left (2 i \, d x + 2 i \, c\right )} + 1}}}{2 \, d} \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(-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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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int {\cos \left (c+d\,x\right )}^2\,{\left (a+a\,\mathrm {tan}\left (c+d\,x\right )\,1{}\mathrm {i}\right )}^{7/2} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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