Optimal. Leaf size=150 \[ \frac{\left (2 a^2-b^2\right ) \sin (c+d x)}{a b^2 d (a \cos (c+d x)+b)}+\frac{2 \sqrt{a-b} \sqrt{a+b} \left (2 a^2+b^2\right ) \tanh ^{-1}\left (\frac{\sqrt{a-b} \tan \left (\frac{1}{2} (c+d x)\right )}{\sqrt{a+b}}\right )}{a^2 b^3 d}+\frac{x}{a^2}-\frac{2 a \tanh ^{-1}(\sin (c+d x))}{b^3 d}+\frac{\tan (c+d x)}{b d (a \cos (c+d x)+b)} \]
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Rubi [A] time = 0.325731, antiderivative size = 150, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.286, Rules used = {3898, 2890, 3057, 2659, 208, 3770} \[ \frac{\left (2 a^2-b^2\right ) \sin (c+d x)}{a b^2 d (a \cos (c+d x)+b)}+\frac{2 \sqrt{a-b} \sqrt{a+b} \left (2 a^2+b^2\right ) \tanh ^{-1}\left (\frac{\sqrt{a-b} \tan \left (\frac{1}{2} (c+d x)\right )}{\sqrt{a+b}}\right )}{a^2 b^3 d}+\frac{x}{a^2}-\frac{2 a \tanh ^{-1}(\sin (c+d x))}{b^3 d}+\frac{\tan (c+d x)}{b d (a \cos (c+d x)+b)} \]
Antiderivative was successfully verified.
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Rule 3898
Rule 2890
Rule 3057
Rule 2659
Rule 208
Rule 3770
Rubi steps
\begin{align*} \int \frac{\tan ^4(c+d x)}{(a+b \sec (c+d x))^2} \, dx &=\int \frac{\sin ^2(c+d x) \tan ^2(c+d x)}{(b+a \cos (c+d x))^2} \, dx\\ &=\frac{\left (2 a^2-b^2\right ) \sin (c+d x)}{a b^2 d (b+a \cos (c+d x))}+\frac{\tan (c+d x)}{b d (b+a \cos (c+d x))}+\frac{\int \frac{\left (-2 a^2-a b \cos (c+d x)+b^2 \cos ^2(c+d x)\right ) \sec (c+d x)}{b+a \cos (c+d x)} \, dx}{a b^2}\\ &=\frac{x}{a^2}+\frac{\left (2 a^2-b^2\right ) \sin (c+d x)}{a b^2 d (b+a \cos (c+d x))}+\frac{\tan (c+d x)}{b d (b+a \cos (c+d x))}-\frac{(2 a) \int \sec (c+d x) \, dx}{b^3}-\frac{\left (-2 a^4+a^2 b^2+b^4\right ) \int \frac{1}{b+a \cos (c+d x)} \, dx}{a^2 b^3}\\ &=\frac{x}{a^2}-\frac{2 a \tanh ^{-1}(\sin (c+d x))}{b^3 d}+\frac{\left (2 a^2-b^2\right ) \sin (c+d x)}{a b^2 d (b+a \cos (c+d x))}+\frac{\tan (c+d x)}{b d (b+a \cos (c+d x))}-\frac{\left (2 \left (-2 a^4+a^2 b^2+b^4\right )\right ) \operatorname{Subst}\left (\int \frac{1}{a+b+(-a+b) x^2} \, dx,x,\tan \left (\frac{1}{2} (c+d x)\right )\right )}{a^2 b^3 d}\\ &=\frac{x}{a^2}-\frac{2 a \tanh ^{-1}(\sin (c+d x))}{b^3 d}+\frac{2 \sqrt{a-b} \sqrt{a+b} \left (2 a^2+b^2\right ) \tanh ^{-1}\left (\frac{\sqrt{a-b} \tan \left (\frac{1}{2} (c+d x)\right )}{\sqrt{a+b}}\right )}{a^2 b^3 d}+\frac{\left (2 a^2-b^2\right ) \sin (c+d x)}{a b^2 d (b+a \cos (c+d x))}+\frac{\tan (c+d x)}{b d (b+a \cos (c+d x))}\\ \end{align*}
Mathematica [B] time = 1.57522, size = 327, normalized size = 2.18 \[ \frac{\sec ^2(c+d x) (a \cos (c+d x)+b) \left (\frac{\left (a^2-b^2\right ) \sin (c+d x)}{a b^2}+\frac{2 \left (a^2 b^2-2 a^4+b^4\right ) (a \cos (c+d x)+b) \tanh ^{-1}\left (\frac{(b-a) \tan \left (\frac{1}{2} (c+d x)\right )}{\sqrt{a^2-b^2}}\right )}{a^2 b^3 \sqrt{a^2-b^2}}+\frac{(c+d x) (a \cos (c+d x)+b)}{a^2}+\frac{\sin \left (\frac{1}{2} (c+d x)\right ) (a \cos (c+d x)+b)}{b^2 \left (\cos \left (\frac{1}{2} (c+d x)\right )-\sin \left (\frac{1}{2} (c+d x)\right )\right )}+\frac{\sin \left (\frac{1}{2} (c+d x)\right ) (a \cos (c+d x)+b)}{b^2 \left (\sin \left (\frac{1}{2} (c+d x)\right )+\cos \left (\frac{1}{2} (c+d x)\right )\right )}+\frac{2 a (a \cos (c+d x)+b) \log \left (\cos \left (\frac{1}{2} (c+d x)\right )-\sin \left (\frac{1}{2} (c+d x)\right )\right )}{b^3}-\frac{2 a (a \cos (c+d x)+b) \log \left (\sin \left (\frac{1}{2} (c+d x)\right )+\cos \left (\frac{1}{2} (c+d x)\right )\right )}{b^3}\right )}{d (a+b \sec (c+d x))^2} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.075, size = 353, normalized size = 2.4 \begin{align*} 2\,{\frac{\arctan \left ( \tan \left ( 1/2\,dx+c/2 \right ) \right ) }{d{a}^{2}}}-2\,{\frac{a\tan \left ( 1/2\,dx+c/2 \right ) }{d{b}^{2} \left ( \left ( \tan \left ( 1/2\,dx+c/2 \right ) \right ) ^{2}a- \left ( \tan \left ( 1/2\,dx+c/2 \right ) \right ) ^{2}b-a-b \right ) }}+2\,{\frac{\tan \left ( 1/2\,dx+c/2 \right ) }{ad \left ( \left ( \tan \left ( 1/2\,dx+c/2 \right ) \right ) ^{2}a- \left ( \tan \left ( 1/2\,dx+c/2 \right ) \right ) ^{2}b-a-b \right ) }}+4\,{\frac{{a}^{2}}{d{b}^{3}\sqrt{ \left ( a+b \right ) \left ( a-b \right ) }}{\it Artanh} \left ({\frac{ \left ( a-b \right ) \tan \left ( 1/2\,dx+c/2 \right ) }{\sqrt{ \left ( a+b \right ) \left ( a-b \right ) }}} \right ) }-2\,{\frac{1}{db\sqrt{ \left ( a+b \right ) \left ( a-b \right ) }}{\it Artanh} \left ({\frac{ \left ( a-b \right ) \tan \left ( 1/2\,dx+c/2 \right ) }{\sqrt{ \left ( a+b \right ) \left ( a-b \right ) }}} \right ) }-2\,{\frac{b}{d{a}^{2}\sqrt{ \left ( a+b \right ) \left ( a-b \right ) }}{\it Artanh} \left ({\frac{ \left ( a-b \right ) \tan \left ( 1/2\,dx+c/2 \right ) }{\sqrt{ \left ( a+b \right ) \left ( a-b \right ) }}} \right ) }-{\frac{1}{d{b}^{2}} \left ( \tan \left ({\frac{dx}{2}}+{\frac{c}{2}} \right ) +1 \right ) ^{-1}}-2\,{\frac{a\ln \left ( \tan \left ( 1/2\,dx+c/2 \right ) +1 \right ) }{d{b}^{3}}}-{\frac{1}{d{b}^{2}} \left ( \tan \left ({\frac{dx}{2}}+{\frac{c}{2}} \right ) -1 \right ) ^{-1}}+2\,{\frac{a\ln \left ( \tan \left ( 1/2\,dx+c/2 \right ) -1 \right ) }{d{b}^{3}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.18755, size = 1374, normalized size = 9.16 \begin{align*} \left [\frac{2 \, a b^{3} d x \cos \left (d x + c\right )^{2} + 2 \, b^{4} d x \cos \left (d x + c\right ) +{\left ({\left (2 \, a^{3} + a b^{2}\right )} \cos \left (d x + c\right )^{2} +{\left (2 \, a^{2} b + b^{3}\right )} \cos \left (d x + c\right )\right )} \sqrt{a^{2} - b^{2}} \log \left (\frac{2 \, a b \cos \left (d x + c\right ) -{\left (a^{2} - 2 \, b^{2}\right )} \cos \left (d x + c\right )^{2} + 2 \, \sqrt{a^{2} - b^{2}}{\left (b \cos \left (d x + c\right ) + a\right )} \sin \left (d x + c\right ) + 2 \, a^{2} - b^{2}}{a^{2} \cos \left (d x + c\right )^{2} + 2 \, a b \cos \left (d x + c\right ) + b^{2}}\right ) - 2 \,{\left (a^{4} \cos \left (d x + c\right )^{2} + a^{3} b \cos \left (d x + c\right )\right )} \log \left (\sin \left (d x + c\right ) + 1\right ) + 2 \,{\left (a^{4} \cos \left (d x + c\right )^{2} + a^{3} b \cos \left (d x + c\right )\right )} \log \left (-\sin \left (d x + c\right ) + 1\right ) + 2 \,{\left (a^{2} b^{2} +{\left (2 \, a^{3} b - a b^{3}\right )} \cos \left (d x + c\right )\right )} \sin \left (d x + c\right )}{2 \,{\left (a^{3} b^{3} d \cos \left (d x + c\right )^{2} + a^{2} b^{4} d \cos \left (d x + c\right )\right )}}, \frac{a b^{3} d x \cos \left (d x + c\right )^{2} + b^{4} d x \cos \left (d x + c\right ) +{\left ({\left (2 \, a^{3} + a b^{2}\right )} \cos \left (d x + c\right )^{2} +{\left (2 \, a^{2} b + b^{3}\right )} \cos \left (d x + c\right )\right )} \sqrt{-a^{2} + b^{2}} \arctan \left (-\frac{\sqrt{-a^{2} + b^{2}}{\left (b \cos \left (d x + c\right ) + a\right )}}{{\left (a^{2} - b^{2}\right )} \sin \left (d x + c\right )}\right ) -{\left (a^{4} \cos \left (d x + c\right )^{2} + a^{3} b \cos \left (d x + c\right )\right )} \log \left (\sin \left (d x + c\right ) + 1\right ) +{\left (a^{4} \cos \left (d x + c\right )^{2} + a^{3} b \cos \left (d x + c\right )\right )} \log \left (-\sin \left (d x + c\right ) + 1\right ) +{\left (a^{2} b^{2} +{\left (2 \, a^{3} b - a b^{3}\right )} \cos \left (d x + c\right )\right )} \sin \left (d x + c\right )}{a^{3} b^{3} d \cos \left (d x + c\right )^{2} + a^{2} b^{4} d \cos \left (d x + c\right )}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\tan ^{4}{\left (c + d x \right )}}{\left (a + b \sec{\left (c + d x \right )}\right )^{2}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 2.60112, size = 397, normalized size = 2.65 \begin{align*} \frac{\frac{d x + c}{a^{2}} - \frac{2 \, a \log \left ({\left | \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right ) + 1 \right |}\right )}{b^{3}} + \frac{2 \, a \log \left ({\left | \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right ) - 1 \right |}\right )}{b^{3}} - \frac{2 \,{\left (2 \, a^{2} \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )^{3} - a b \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )^{3} - b^{2} \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )^{3} - 2 \, a^{2} \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right ) - a b \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right ) + b^{2} \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )\right )}}{{\left (a \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )^{4} - b \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )^{4} - 2 \, a \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )^{2} + a + b\right )} a b^{2}} + \frac{2 \,{\left (2 \, a^{4} - a^{2} b^{2} - b^{4}\right )}{\left (\pi \left \lfloor \frac{d x + c}{2 \, \pi } + \frac{1}{2} \right \rfloor \mathrm{sgn}\left (-2 \, a + 2 \, b\right ) + \arctan \left (-\frac{a \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right ) - b \tan \left (\frac{1}{2} \, d x + \frac{1}{2} \, c\right )}{\sqrt{-a^{2} + b^{2}}}\right )\right )}}{\sqrt{-a^{2} + b^{2}} a^{2} b^{3}}}{d} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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