Optimal. Leaf size=148 \[ -\frac {a^2 b}{d \left (a^2+b^2\right )^2 (a+b \tan (c+d x))}-\frac {\cos ^2(c+d x) \left (\left (a^2-b^2\right ) \tan (c+d x)+2 a b\right )}{2 d \left (a^2+b^2\right )^2}+\frac {2 a b \left (a^2-b^2\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{d \left (a^2+b^2\right )^3}+\frac {x \left (a^4-6 a^2 b^2+b^4\right )}{2 \left (a^2+b^2\right )^3} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.29, antiderivative size = 148, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {3516, 1647, 1629, 635, 203, 260} \[ -\frac {a^2 b}{d \left (a^2+b^2\right )^2 (a+b \tan (c+d x))}-\frac {\cos ^2(c+d x) \left (\left (a^2-b^2\right ) \tan (c+d x)+2 a b\right )}{2 d \left (a^2+b^2\right )^2}+\frac {2 a b \left (a^2-b^2\right ) \log (a \cos (c+d x)+b \sin (c+d x))}{d \left (a^2+b^2\right )^3}+\frac {x \left (-6 a^2 b^2+a^4+b^4\right )}{2 \left (a^2+b^2\right )^3} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 203
Rule 260
Rule 635
Rule 1629
Rule 1647
Rule 3516
Rubi steps
\begin {align*} \int \frac {\sin ^2(c+d x)}{(a+b \tan (c+d x))^2} \, dx &=\frac {b \operatorname {Subst}\left (\int \frac {x^2}{(a+x)^2 \left (b^2+x^2\right )^2} \, dx,x,b \tan (c+d x)\right )}{d}\\ &=-\frac {\cos ^2(c+d x) \left (2 a b+\left (a^2-b^2\right ) \tan (c+d x)\right )}{2 \left (a^2+b^2\right )^2 d}-\frac {\operatorname {Subst}\left (\int \frac {-\frac {a^2 b^2 \left (a^2-b^2\right )}{\left (a^2+b^2\right )^2}+\frac {2 a b^2 x}{a^2+b^2}+\frac {b^2 \left (a^2-b^2\right ) x^2}{\left (a^2+b^2\right )^2}}{(a+x)^2 \left (b^2+x^2\right )} \, dx,x,b \tan (c+d x)\right )}{2 b d}\\ &=-\frac {\cos ^2(c+d x) \left (2 a b+\left (a^2-b^2\right ) \tan (c+d x)\right )}{2 \left (a^2+b^2\right )^2 d}-\frac {\operatorname {Subst}\left (\int \left (-\frac {2 a^2 b^2}{\left (a^2+b^2\right )^2 (a+x)^2}+\frac {4 a b^2 \left (-a^2+b^2\right )}{\left (a^2+b^2\right )^3 (a+x)}+\frac {b^2 \left (-a^4+6 a^2 b^2-b^4+4 a \left (a^2-b^2\right ) x\right )}{\left (a^2+b^2\right )^3 \left (b^2+x^2\right )}\right ) \, dx,x,b \tan (c+d x)\right )}{2 b d}\\ &=\frac {2 a b \left (a^2-b^2\right ) \log (a+b \tan (c+d x))}{\left (a^2+b^2\right )^3 d}-\frac {a^2 b}{\left (a^2+b^2\right )^2 d (a+b \tan (c+d x))}-\frac {\cos ^2(c+d x) \left (2 a b+\left (a^2-b^2\right ) \tan (c+d x)\right )}{2 \left (a^2+b^2\right )^2 d}-\frac {b \operatorname {Subst}\left (\int \frac {-a^4+6 a^2 b^2-b^4+4 a \left (a^2-b^2\right ) x}{b^2+x^2} \, dx,x,b \tan (c+d x)\right )}{2 \left (a^2+b^2\right )^3 d}\\ &=\frac {2 a b \left (a^2-b^2\right ) \log (a+b \tan (c+d x))}{\left (a^2+b^2\right )^3 d}-\frac {a^2 b}{\left (a^2+b^2\right )^2 d (a+b \tan (c+d x))}-\frac {\cos ^2(c+d x) \left (2 a b+\left (a^2-b^2\right ) \tan (c+d x)\right )}{2 \left (a^2+b^2\right )^2 d}-\frac {\left (2 a b \left (a^2-b^2\right )\right ) \operatorname {Subst}\left (\int \frac {x}{b^2+x^2} \, dx,x,b \tan (c+d x)\right )}{\left (a^2+b^2\right )^3 d}+\frac {\left (b \left (a^4-6 a^2 b^2+b^4\right )\right ) \operatorname {Subst}\left (\int \frac {1}{b^2+x^2} \, dx,x,b \tan (c+d x)\right )}{2 \left (a^2+b^2\right )^3 d}\\ &=\frac {\left (a^4-6 a^2 b^2+b^4\right ) x}{2 \left (a^2+b^2\right )^3}+\frac {2 a b \left (a^2-b^2\right ) \log (\cos (c+d x))}{\left (a^2+b^2\right )^3 d}+\frac {2 a b \left (a^2-b^2\right ) \log (a+b \tan (c+d x))}{\left (a^2+b^2\right )^3 d}-\frac {a^2 b}{\left (a^2+b^2\right )^2 d (a+b \tan (c+d x))}-\frac {\cos ^2(c+d x) \left (2 a b+\left (a^2-b^2\right ) \tan (c+d x)\right )}{2 \left (a^2+b^2\right )^2 d}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A] time = 3.39, size = 246, normalized size = 1.66 \[ -\frac {b \left (\frac {(a-b) (a+b) \left (a^2+b^2\right ) \sin (2 (c+d x))}{2 b}+2 a \left (a^2+b^2\right ) \cos ^2(c+d x)+\frac {\left (a^2-b^2\right ) \left (a^2+b^2\right ) \tan ^{-1}(\tan (c+d x))}{b}+\frac {2 a^2 \left (a^2+b^2\right )}{a+b \tan (c+d x)}+a \left (\frac {3 a b^2-a^3}{\sqrt {-b^2}}+2 a^2-2 b^2\right ) \log \left (\sqrt {-b^2}-b \tan (c+d x)\right )+a \left (\frac {a^3-3 a b^2}{\sqrt {-b^2}}+2 a^2-2 b^2\right ) \log \left (\sqrt {-b^2}+b \tan (c+d x)\right )-4 a (a-b) (a+b) \log (a+b \tan (c+d x))\right )}{2 d \left (a^2+b^2\right )^3} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
fricas [B] time = 0.47, size = 292, normalized size = 1.97 \[ -\frac {{\left (a^{4} b + 2 \, a^{2} b^{3} + b^{5}\right )} \cos \left (d x + c\right )^{3} + {\left (a^{2} b^{3} - b^{5} - {\left (a^{5} - 6 \, a^{3} b^{2} + a b^{4}\right )} d x\right )} \cos \left (d x + c\right ) - 2 \, {\left ({\left (a^{4} b - a^{2} b^{3}\right )} \cos \left (d x + c\right ) + {\left (a^{3} b^{2} - a b^{4}\right )} \sin \left (d x + c\right )\right )} \log \left (2 \, a b \cos \left (d x + c\right ) \sin \left (d x + c\right ) + {\left (a^{2} - b^{2}\right )} \cos \left (d x + c\right )^{2} + b^{2}\right ) - {\left (3 \, a^{3} b^{2} + a b^{4} + {\left (a^{4} b - 6 \, a^{2} b^{3} + b^{5}\right )} d x - {\left (a^{5} + 2 \, a^{3} b^{2} + a b^{4}\right )} \cos \left (d x + c\right )^{2}\right )} \sin \left (d x + c\right )}{2 \, {\left ({\left (a^{7} + 3 \, a^{5} b^{2} + 3 \, a^{3} b^{4} + a b^{6}\right )} d \cos \left (d x + c\right ) + {\left (a^{6} b + 3 \, a^{4} b^{3} + 3 \, a^{2} b^{5} + b^{7}\right )} d \sin \left (d x + c\right )\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
giac [A] time = 0.89, size = 263, normalized size = 1.78 \[ \frac {\frac {{\left (a^{4} - 6 \, a^{2} b^{2} + b^{4}\right )} {\left (d x + c\right )}}{a^{6} + 3 \, a^{4} b^{2} + 3 \, a^{2} b^{4} + b^{6}} - \frac {2 \, {\left (a^{3} b - a b^{3}\right )} \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{6} + 3 \, a^{4} b^{2} + 3 \, a^{2} b^{4} + b^{6}} + \frac {4 \, {\left (a^{3} b^{2} - a b^{4}\right )} \log \left ({\left | b \tan \left (d x + c\right ) + a \right |}\right )}{a^{6} b + 3 \, a^{4} b^{3} + 3 \, a^{2} b^{5} + b^{7}} - \frac {3 \, a^{2} b \tan \left (d x + c\right )^{2} - b^{3} \tan \left (d x + c\right )^{2} + a^{3} \tan \left (d x + c\right ) + a b^{2} \tan \left (d x + c\right ) + 4 \, a^{2} b}{{\left (a^{4} + 2 \, a^{2} b^{2} + b^{4}\right )} {\left (b \tan \left (d x + c\right )^{3} + a \tan \left (d x + c\right )^{2} + b \tan \left (d x + c\right ) + a\right )}}}{2 \, d} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maple [B] time = 0.46, size = 352, normalized size = 2.38 \[ -\frac {a^{2} b}{\left (a^{2}+b^{2}\right )^{2} d \left (a +b \tan \left (d x +c \right )\right )}+\frac {2 a^{3} b \ln \left (a +b \tan \left (d x +c \right )\right )}{d \left (a^{2}+b^{2}\right )^{3}}-\frac {2 a \,b^{3} \ln \left (a +b \tan \left (d x +c \right )\right )}{d \left (a^{2}+b^{2}\right )^{3}}-\frac {\tan \left (d x +c \right ) a^{4}}{2 d \left (a^{2}+b^{2}\right )^{3} \left (1+\tan ^{2}\left (d x +c \right )\right )}+\frac {\tan \left (d x +c \right ) b^{4}}{2 d \left (a^{2}+b^{2}\right )^{3} \left (1+\tan ^{2}\left (d x +c \right )\right )}-\frac {a^{3} b}{d \left (a^{2}+b^{2}\right )^{3} \left (1+\tan ^{2}\left (d x +c \right )\right )}-\frac {a \,b^{3}}{d \left (a^{2}+b^{2}\right )^{3} \left (1+\tan ^{2}\left (d x +c \right )\right )}-\frac {\ln \left (1+\tan ^{2}\left (d x +c \right )\right ) a^{3} b}{d \left (a^{2}+b^{2}\right )^{3}}+\frac {\ln \left (1+\tan ^{2}\left (d x +c \right )\right ) a \,b^{3}}{d \left (a^{2}+b^{2}\right )^{3}}-\frac {3 \arctan \left (\tan \left (d x +c \right )\right ) a^{2} b^{2}}{d \left (a^{2}+b^{2}\right )^{3}}+\frac {\arctan \left (\tan \left (d x +c \right )\right ) b^{4}}{2 d \left (a^{2}+b^{2}\right )^{3}}+\frac {\arctan \left (\tan \left (d x +c \right )\right ) a^{4}}{2 d \left (a^{2}+b^{2}\right )^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maxima [B] time = 0.81, size = 293, normalized size = 1.98 \[ \frac {\frac {{\left (a^{4} - 6 \, a^{2} b^{2} + b^{4}\right )} {\left (d x + c\right )}}{a^{6} + 3 \, a^{4} b^{2} + 3 \, a^{2} b^{4} + b^{6}} + \frac {4 \, {\left (a^{3} b - a b^{3}\right )} \log \left (b \tan \left (d x + c\right ) + a\right )}{a^{6} + 3 \, a^{4} b^{2} + 3 \, a^{2} b^{4} + b^{6}} - \frac {2 \, {\left (a^{3} b - a b^{3}\right )} \log \left (\tan \left (d x + c\right )^{2} + 1\right )}{a^{6} + 3 \, a^{4} b^{2} + 3 \, a^{2} b^{4} + b^{6}} - \frac {4 \, a^{2} b + {\left (3 \, a^{2} b - b^{3}\right )} \tan \left (d x + c\right )^{2} + {\left (a^{3} + a b^{2}\right )} \tan \left (d x + c\right )}{a^{5} + 2 \, a^{3} b^{2} + a b^{4} + {\left (a^{4} b + 2 \, a^{2} b^{3} + b^{5}\right )} \tan \left (d x + c\right )^{3} + {\left (a^{5} + 2 \, a^{3} b^{2} + a b^{4}\right )} \tan \left (d x + c\right )^{2} + {\left (a^{4} b + 2 \, a^{2} b^{3} + b^{5}\right )} \tan \left (d x + c\right )}}{2 \, d} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
mupad [B] time = 4.06, size = 255, normalized size = 1.72 \[ \frac {\ln \left (a+b\,\mathrm {tan}\left (c+d\,x\right )\right )\,\left (\frac {2\,a\,b}{{\left (a^2+b^2\right )}^2}-\frac {4\,a\,b^3}{{\left (a^2+b^2\right )}^3}\right )}{d}-\frac {\frac {{\mathrm {tan}\left (c+d\,x\right )}^2\,\left (3\,a^2\,b-b^3\right )}{2\,\left (a^4+2\,a^2\,b^2+b^4\right )}+\frac {a\,\mathrm {tan}\left (c+d\,x\right )}{2\,\left (a^2+b^2\right )}+\frac {2\,a^2\,b}{{\left (a^2+b^2\right )}^2}}{d\,\left (b\,{\mathrm {tan}\left (c+d\,x\right )}^3+a\,{\mathrm {tan}\left (c+d\,x\right )}^2+b\,\mathrm {tan}\left (c+d\,x\right )+a\right )}+\frac {\ln \left (\mathrm {tan}\left (c+d\,x\right )+1{}\mathrm {i}\right )\,\left (a+b\,1{}\mathrm {i}\right )}{4\,d\,\left (-a^3\,1{}\mathrm {i}-3\,a^2\,b+a\,b^2\,3{}\mathrm {i}+b^3\right )}+\frac {\ln \left (\mathrm {tan}\left (c+d\,x\right )-\mathrm {i}\right )\,\left (b+a\,1{}\mathrm {i}\right )}{4\,d\,\left (-a^3-a^2\,b\,3{}\mathrm {i}+3\,a\,b^2+b^3\,1{}\mathrm {i}\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
sympy [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________