Optimal. Leaf size=93 \[ -\frac{\sqrt{a} (2 a+3 b) \tan ^{-1}\left (\frac{\sqrt{a+b} \tan (c+d x)}{\sqrt{a}}\right )}{2 b^2 d (a+b)^{3/2}}+\frac{a \tan (c+d x)}{2 b d (a+b) \left ((a+b) \tan ^2(c+d x)+a\right )}+\frac{x}{b^2} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.137644, antiderivative size = 93, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 5, integrand size = 23, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.217, Rules used = {3187, 470, 522, 203, 205} \[ -\frac{\sqrt{a} (2 a+3 b) \tan ^{-1}\left (\frac{\sqrt{a+b} \tan (c+d x)}{\sqrt{a}}\right )}{2 b^2 d (a+b)^{3/2}}+\frac{a \tan (c+d x)}{2 b d (a+b) \left ((a+b) \tan ^2(c+d x)+a\right )}+\frac{x}{b^2} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 3187
Rule 470
Rule 522
Rule 203
Rule 205
Rubi steps
\begin{align*} \int \frac{\sin ^4(c+d x)}{\left (a+b \sin ^2(c+d x)\right )^2} \, dx &=\frac{\operatorname{Subst}\left (\int \frac{x^4}{\left (1+x^2\right ) \left (a+(a+b) x^2\right )^2} \, dx,x,\tan (c+d x)\right )}{d}\\ &=\frac{a \tan (c+d x)}{2 b (a+b) d \left (a+(a+b) \tan ^2(c+d x)\right )}-\frac{\operatorname{Subst}\left (\int \frac{a+(-a-2 b) x^2}{\left (1+x^2\right ) \left (a+(a+b) x^2\right )} \, dx,x,\tan (c+d x)\right )}{2 b (a+b) d}\\ &=\frac{a \tan (c+d x)}{2 b (a+b) d \left (a+(a+b) \tan ^2(c+d x)\right )}+\frac{\operatorname{Subst}\left (\int \frac{1}{1+x^2} \, dx,x,\tan (c+d x)\right )}{b^2 d}-\frac{(a (2 a+3 b)) \operatorname{Subst}\left (\int \frac{1}{a+(a+b) x^2} \, dx,x,\tan (c+d x)\right )}{2 b^2 (a+b) d}\\ &=\frac{x}{b^2}-\frac{\sqrt{a} (2 a+3 b) \tan ^{-1}\left (\frac{\sqrt{a+b} \tan (c+d x)}{\sqrt{a}}\right )}{2 b^2 (a+b)^{3/2} d}+\frac{a \tan (c+d x)}{2 b (a+b) d \left (a+(a+b) \tan ^2(c+d x)\right )}\\ \end{align*}
Mathematica [A] time = 0.869192, size = 93, normalized size = 1. \[ \frac{-\frac{\sqrt{a} (2 a+3 b) \tan ^{-1}\left (\frac{\sqrt{a+b} \tan (c+d x)}{\sqrt{a}}\right )}{(a+b)^{3/2}}+\frac{a b \sin (2 (c+d x))}{(a+b) (2 a-b \cos (2 (c+d x))+b)}+2 (c+d x)}{2 b^2 d} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.086, size = 140, normalized size = 1.5 \begin{align*}{\frac{\arctan \left ( \tan \left ( dx+c \right ) \right ) }{{b}^{2}d}}+{\frac{a\tan \left ( dx+c \right ) }{2\,bd \left ( a+b \right ) \left ( a \left ( \tan \left ( dx+c \right ) \right ) ^{2}+ \left ( \tan \left ( dx+c \right ) \right ) ^{2}b+a \right ) }}-{\frac{{a}^{2}}{{b}^{2}d \left ( a+b \right ) }\arctan \left ({ \left ( a+b \right ) \tan \left ( dx+c \right ){\frac{1}{\sqrt{a \left ( a+b \right ) }}}} \right ){\frac{1}{\sqrt{a \left ( a+b \right ) }}}}-{\frac{3\,a}{2\,bd \left ( a+b \right ) }\arctan \left ({ \left ( a+b \right ) \tan \left ( dx+c \right ){\frac{1}{\sqrt{a \left ( a+b \right ) }}}} \right ){\frac{1}{\sqrt{a \left ( a+b \right ) }}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
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.
[In]
[Out]
________________________________________________________________________________________
Fricas [B] time = 1.95181, size = 1165, normalized size = 12.53 \begin{align*} \left [\frac{8 \,{\left (a b + b^{2}\right )} d x \cos \left (d x + c\right )^{2} - 4 \, a b \cos \left (d x + c\right ) \sin \left (d x + c\right ) - 8 \,{\left (a^{2} + 2 \, a b + b^{2}\right )} d x +{\left ({\left (2 \, a b + 3 \, b^{2}\right )} \cos \left (d x + c\right )^{2} - 2 \, a^{2} - 5 \, a b - 3 \, b^{2}\right )} \sqrt{-\frac{a}{a + b}} \log \left (\frac{{\left (8 \, a^{2} + 8 \, a b + b^{2}\right )} \cos \left (d x + c\right )^{4} - 2 \,{\left (4 \, a^{2} + 5 \, a b + b^{2}\right )} \cos \left (d x + c\right )^{2} + 4 \,{\left ({\left (2 \, a^{2} + 3 \, a b + b^{2}\right )} \cos \left (d x + c\right )^{3} -{\left (a^{2} + 2 \, a b + b^{2}\right )} \cos \left (d x + c\right )\right )} \sqrt{-\frac{a}{a + b}} \sin \left (d x + c\right ) + a^{2} + 2 \, a b + b^{2}}{b^{2} \cos \left (d x + c\right )^{4} - 2 \,{\left (a b + b^{2}\right )} \cos \left (d x + c\right )^{2} + a^{2} + 2 \, a b + b^{2}}\right )}{8 \,{\left ({\left (a b^{3} + b^{4}\right )} d \cos \left (d x + c\right )^{2} -{\left (a^{2} b^{2} + 2 \, a b^{3} + b^{4}\right )} d\right )}}, \frac{4 \,{\left (a b + b^{2}\right )} d x \cos \left (d x + c\right )^{2} - 2 \, a b \cos \left (d x + c\right ) \sin \left (d x + c\right ) - 4 \,{\left (a^{2} + 2 \, a b + b^{2}\right )} d x +{\left ({\left (2 \, a b + 3 \, b^{2}\right )} \cos \left (d x + c\right )^{2} - 2 \, a^{2} - 5 \, a b - 3 \, b^{2}\right )} \sqrt{\frac{a}{a + b}} \arctan \left (\frac{{\left ({\left (2 \, a + b\right )} \cos \left (d x + c\right )^{2} - a - b\right )} \sqrt{\frac{a}{a + b}}}{2 \, a \cos \left (d x + c\right ) \sin \left (d x + c\right )}\right )}{4 \,{\left ({\left (a b^{3} + b^{4}\right )} d \cos \left (d x + c\right )^{2} -{\left (a^{2} b^{2} + 2 \, a b^{3} + b^{4}\right )} d\right )}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A] time = 1.16786, size = 189, normalized size = 2.03 \begin{align*} -\frac{\frac{{\left (\pi \left \lfloor \frac{d x + c}{\pi } + \frac{1}{2} \right \rfloor \mathrm{sgn}\left (2 \, a + 2 \, b\right ) + \arctan \left (\frac{a \tan \left (d x + c\right ) + b \tan \left (d x + c\right )}{\sqrt{a^{2} + a b}}\right )\right )}{\left (2 \, a^{2} + 3 \, a b\right )}}{{\left (a b^{2} + b^{3}\right )} \sqrt{a^{2} + a b}} - \frac{a \tan \left (d x + c\right )}{{\left (a \tan \left (d x + c\right )^{2} + b \tan \left (d x + c\right )^{2} + a\right )}{\left (a b + b^{2}\right )}} - \frac{2 \,{\left (d x + c\right )}}{b^{2}}}{2 \, d} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]