Integrand size = 39, antiderivative size = 69 \[ \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx=\frac {1}{2} (2 b B+a (A+2 C)) x+\frac {b C \text {arctanh}(\sin (c+d x))}{d}+\frac {(A b+a B) \sin (c+d x)}{d}+\frac {a A \cos (c+d x) \sin (c+d x)}{2 d} \]
1/2*(2*B*b+a*(A+2*C))*x+b*C*arctanh(sin(d*x+c))/d+(A*b+B*a)*sin(d*x+c)/d+1 /2*a*A*cos(d*x+c)*sin(d*x+c)/d
Time = 0.10 (sec) , antiderivative size = 68, normalized size of antiderivative = 0.99 \[ \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx=\frac {2 a A c+2 a A d x+4 b B d x+4 a C d x+4 b C \text {arctanh}(\sin (c+d x))+4 (A b+a B) \sin (c+d x)+a A \sin (2 (c+d x))}{4 d} \]
(2*a*A*c + 2*a*A*d*x + 4*b*B*d*x + 4*a*C*d*x + 4*b*C*ArcTanh[Sin[c + d*x]] + 4*(A*b + a*B)*Sin[c + d*x] + a*A*Sin[2*(c + d*x)])/(4*d)
Time = 0.56 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.06, number of steps used = 10, number of rules used = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.256, Rules used = {3042, 4562, 25, 3042, 4535, 24, 3042, 4533, 3042, 4257}
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
| \(\displaystyle \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx\) |
| \(\Big \downarrow \) 3042 |
| \(\displaystyle \int \frac {\left (a+b \csc \left (c+d x+\frac {\pi }{2}\right )\right ) \left (A+B \csc \left (c+d x+\frac {\pi }{2}\right )+C \csc \left (c+d x+\frac {\pi }{2}\right )^2\right )}{\csc \left (c+d x+\frac {\pi }{2}\right )^2}dx\) |
| \(\Big \downarrow \) 4562 |
| \(\displaystyle \frac {a A \sin (c+d x) \cos (c+d x)}{2 d}-\frac {1}{2} \int -\cos (c+d x) \left (2 b C \sec ^2(c+d x)+(2 b B+a (A+2 C)) \sec (c+d x)+2 (A b+a B)\right )dx\) |
| \(\Big \downarrow \) 25 |
| \(\displaystyle \frac {1}{2} \int \cos (c+d x) \left (2 b C \sec ^2(c+d x)+(2 b B+a (A+2 C)) \sec (c+d x)+2 (A b+a B)\right )dx+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
| \(\Big \downarrow \) 3042 |
| \(\displaystyle \frac {1}{2} \int \frac {2 b C \csc \left (c+d x+\frac {\pi }{2}\right )^2+(2 b B+a (A+2 C)) \csc \left (c+d x+\frac {\pi }{2}\right )+2 (A b+a B)}{\csc \left (c+d x+\frac {\pi }{2}\right )}dx+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
| \(\Big \downarrow \) 4535 |
| \(\displaystyle \frac {1}{2} \left (\int \cos (c+d x) \left (2 b C \sec ^2(c+d x)+2 (A b+a B)\right )dx+(a (A+2 C)+2 b B) \int 1dx\right )+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
| \(\Big \downarrow \) 24 |
| \(\displaystyle \frac {1}{2} \left (\int \cos (c+d x) \left (2 b C \sec ^2(c+d x)+2 (A b+a B)\right )dx+x (a (A+2 C)+2 b B)\right )+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
| \(\Big \downarrow \) 3042 |
| \(\displaystyle \frac {1}{2} \left (\int \frac {2 b C \csc \left (c+d x+\frac {\pi }{2}\right )^2+2 (A b+a B)}{\csc \left (c+d x+\frac {\pi }{2}\right )}dx+x (a (A+2 C)+2 b B)\right )+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
| \(\Big \downarrow \) 4533 |
| \(\displaystyle \frac {1}{2} \left (2 b C \int \sec (c+d x)dx+\frac {2 (a B+A b) \sin (c+d x)}{d}+x (a (A+2 C)+2 b B)\right )+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
| \(\Big \downarrow \) 3042 |
| \(\displaystyle \frac {1}{2} \left (2 b C \int \csc \left (c+d x+\frac {\pi }{2}\right )dx+\frac {2 (a B+A b) \sin (c+d x)}{d}+x (a (A+2 C)+2 b B)\right )+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
| \(\Big \downarrow \) 4257 |
| \(\displaystyle \frac {1}{2} \left (\frac {2 (a B+A b) \sin (c+d x)}{d}+x (a (A+2 C)+2 b B)+\frac {2 b C \text {arctanh}(\sin (c+d x))}{d}\right )+\frac {a A \sin (c+d x) \cos (c+d x)}{2 d}\) |
(a*A*Cos[c + d*x]*Sin[c + d*x])/(2*d) + ((2*b*B + a*(A + 2*C))*x + (2*b*C* ArcTanh[Sin[c + d*x]])/d + (2*(A*b + a*B)*Sin[c + d*x])/d)/2
3.9.66.3.1 Defintions of rubi rules used
Int[csc[(c_.) + (d_.)*(x_)], x_Symbol] :> Simp[-ArcTanh[Cos[c + d*x]]/d, x] /; FreeQ[{c, d}, x]
Int[(csc[(e_.) + (f_.)*(x_)]*(b_.))^(m_.)*(csc[(e_.) + (f_.)*(x_)]^2*(C_.) + (A_)), x_Symbol] :> Simp[A*Cot[e + f*x]*((b*Csc[e + f*x])^m/(f*m)), x] + Simp[(C*m + A*(m + 1))/(b^2*m) Int[(b*Csc[e + f*x])^(m + 2), x], x] /; Fr eeQ[{b, e, f, A, C}, x] && NeQ[C*m + A*(m + 1), 0] && LeQ[m, -1]
Int[(csc[(e_.) + (f_.)*(x_)]*(b_.))^(m_.)*((A_.) + csc[(e_.) + (f_.)*(x_)]* (B_.) + csc[(e_.) + (f_.)*(x_)]^2*(C_.)), x_Symbol] :> Simp[B/b Int[(b*Cs c[e + f*x])^(m + 1), x], x] + Int[(b*Csc[e + f*x])^m*(A + C*Csc[e + f*x]^2) , x] /; FreeQ[{b, e, f, A, B, C, m}, x]
Int[((A_.) + csc[(e_.) + (f_.)*(x_)]*(B_.) + csc[(e_.) + (f_.)*(x_)]^2*(C_. ))*(csc[(e_.) + (f_.)*(x_)]*(d_.))^(n_)*(csc[(e_.) + (f_.)*(x_)]*(b_.) + (a _)), x_Symbol] :> Simp[A*a*Cot[e + f*x]*((d*Csc[e + f*x])^n/(f*n)), x] + Si mp[1/(d*n) Int[(d*Csc[e + f*x])^(n + 1)*Simp[n*(B*a + A*b) + (n*(a*C + B* b) + A*a*(n + 1))*Csc[e + f*x] + b*C*n*Csc[e + f*x]^2, x], x], x] /; FreeQ[ {a, b, d, e, f, A, B, C}, x] && LtQ[n, -1]
Time = 0.26 (sec) , antiderivative size = 82, normalized size of antiderivative = 1.19
| method | result | size |
| derivativedivides | \(\frac {a A \left (\frac {\sin \left (d x +c \right ) \cos \left (d x +c \right )}{2}+\frac {d x}{2}+\frac {c}{2}\right )+a B \sin \left (d x +c \right )+C a \left (d x +c \right )+A b \sin \left (d x +c \right )+B b \left (d x +c \right )+C b \ln \left (\sec \left (d x +c \right )+\tan \left (d x +c \right )\right )}{d}\) | \(82\) |
| default | \(\frac {a A \left (\frac {\sin \left (d x +c \right ) \cos \left (d x +c \right )}{2}+\frac {d x}{2}+\frac {c}{2}\right )+a B \sin \left (d x +c \right )+C a \left (d x +c \right )+A b \sin \left (d x +c \right )+B b \left (d x +c \right )+C b \ln \left (\sec \left (d x +c \right )+\tan \left (d x +c \right )\right )}{d}\) | \(82\) |
| parallelrisch | \(\frac {-4 C \ln \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-1\right ) b +4 C \ln \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )+1\right ) b +a A \sin \left (2 d x +2 c \right )+\left (4 A b +4 a B \right ) \sin \left (d x +c \right )+2 \left (2 B b +a \left (A +2 C \right )\right ) d x}{4 d}\) | \(83\) |
| risch | \(\frac {a A x}{2}+x B b +a x C -\frac {i A b \,{\mathrm e}^{i \left (d x +c \right )}}{2 d}-\frac {i a B \,{\mathrm e}^{i \left (d x +c \right )}}{2 d}+\frac {i {\mathrm e}^{-i \left (d x +c \right )} A b}{2 d}+\frac {i {\mathrm e}^{-i \left (d x +c \right )} a B}{2 d}+\frac {b \ln \left ({\mathrm e}^{i \left (d x +c \right )}+i\right ) C}{d}-\frac {b \ln \left ({\mathrm e}^{i \left (d x +c \right )}-i\right ) C}{d}+\frac {a A \sin \left (2 d x +2 c \right )}{4 d}\) | \(138\) |
| norman | \(\frac {\left (\frac {1}{2} a A +B b +C a \right ) x +\left (\frac {1}{2} a A +B b +C a \right ) x \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{8}+\frac {\left (a A +2 A b +2 a B \right ) \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{d}+\frac {\left (3 a A -2 A b -2 a B \right ) \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{5}}{d}+\left (-a A -2 B b -2 C a \right ) x \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{4}-\frac {\left (a A -2 A b -2 a B \right ) \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{7}}{d}-\frac {\left (3 a A +2 A b +2 a B \right ) \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{3}}{d}}{\left (1+\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}\right )^{2} \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}-1\right )^{2}}+\frac {C b \ln \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )+1\right )}{d}-\frac {C b \ln \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )-1\right )}{d}\) | \(244\) |
1/d*(a*A*(1/2*sin(d*x+c)*cos(d*x+c)+1/2*d*x+1/2*c)+a*B*sin(d*x+c)+C*a*(d*x +c)+A*b*sin(d*x+c)+B*b*(d*x+c)+C*b*ln(sec(d*x+c)+tan(d*x+c)))
Time = 0.27 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.06 \[ \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx=\frac {{\left ({\left (A + 2 \, C\right )} a + 2 \, B b\right )} d x + C b \log \left (\sin \left (d x + c\right ) + 1\right ) - C b \log \left (-\sin \left (d x + c\right ) + 1\right ) + {\left (A a \cos \left (d x + c\right ) + 2 \, B a + 2 \, A b\right )} \sin \left (d x + c\right )}{2 \, d} \]
integrate(cos(d*x+c)^2*(a+b*sec(d*x+c))*(A+B*sec(d*x+c)+C*sec(d*x+c)^2),x, algorithm="fricas")
1/2*(((A + 2*C)*a + 2*B*b)*d*x + C*b*log(sin(d*x + c) + 1) - C*b*log(-sin( d*x + c) + 1) + (A*a*cos(d*x + c) + 2*B*a + 2*A*b)*sin(d*x + c))/d
\[ \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx=\int \left (a + b \sec {\left (c + d x \right )}\right ) \left (A + B \sec {\left (c + d x \right )} + C \sec ^{2}{\left (c + d x \right )}\right ) \cos ^{2}{\left (c + d x \right )}\, dx \]
Time = 0.23 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.29 \[ \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx=\frac {{\left (2 \, d x + 2 \, c + \sin \left (2 \, d x + 2 \, c\right )\right )} A a + 4 \, {\left (d x + c\right )} C a + 4 \, {\left (d x + c\right )} B b + 2 \, C b {\left (\log \left (\sin \left (d x + c\right ) + 1\right ) - \log \left (\sin \left (d x + c\right ) - 1\right )\right )} + 4 \, B a \sin \left (d x + c\right ) + 4 \, A b \sin \left (d x + c\right )}{4 \, d} \]
integrate(cos(d*x+c)^2*(a+b*sec(d*x+c))*(A+B*sec(d*x+c)+C*sec(d*x+c)^2),x, algorithm="maxima")
1/4*((2*d*x + 2*c + sin(2*d*x + 2*c))*A*a + 4*(d*x + c)*C*a + 4*(d*x + c)* B*b + 2*C*b*(log(sin(d*x + c) + 1) - log(sin(d*x + c) - 1)) + 4*B*a*sin(d* x + c) + 4*A*b*sin(d*x + c))/d
Leaf count of result is larger than twice the leaf count of optimal. 159 vs. \(2 (65) = 130\).
Time = 0.30 (sec) , antiderivative size = 159, normalized size of antiderivative = 2.30 \[ \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx=\frac {2 \, C b \log \left ({\left | \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) + 1 \right |}\right ) - 2 \, C b \log \left ({\left | \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - 1 \right |}\right ) + {\left (A a + 2 \, C a + 2 \, B b\right )} {\left (d x + c\right )} - \frac {2 \, {\left (A a \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{3} - 2 \, B a \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{3} - 2 \, A b \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{3} - A a \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - 2 \, B a \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - 2 \, A b \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )\right )}}{{\left (\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{2} + 1\right )}^{2}}}{2 \, d} \]
1/2*(2*C*b*log(abs(tan(1/2*d*x + 1/2*c) + 1)) - 2*C*b*log(abs(tan(1/2*d*x + 1/2*c) - 1)) + (A*a + 2*C*a + 2*B*b)*(d*x + c) - 2*(A*a*tan(1/2*d*x + 1/ 2*c)^3 - 2*B*a*tan(1/2*d*x + 1/2*c)^3 - 2*A*b*tan(1/2*d*x + 1/2*c)^3 - A*a *tan(1/2*d*x + 1/2*c) - 2*B*a*tan(1/2*d*x + 1/2*c) - 2*A*b*tan(1/2*d*x + 1 /2*c))/(tan(1/2*d*x + 1/2*c)^2 + 1)^2)/d
Time = 16.41 (sec) , antiderivative size = 156, normalized size of antiderivative = 2.26 \[ \int \cos ^2(c+d x) (a+b \sec (c+d x)) \left (A+B \sec (c+d x)+C \sec ^2(c+d x)\right ) \, dx=\frac {A\,b\,\sin \left (c+d\,x\right )}{d}+\frac {B\,a\,\sin \left (c+d\,x\right )}{d}+\frac {A\,a\,\mathrm {atan}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )}{d}+\frac {2\,B\,b\,\mathrm {atan}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )}{d}+\frac {2\,C\,a\,\mathrm {atan}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )}{d}+\frac {2\,C\,b\,\mathrm {atanh}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )}{d}+\frac {A\,a\,\sin \left (2\,c+2\,d\,x\right )}{4\,d} \]
(A*b*sin(c + d*x))/d + (B*a*sin(c + d*x))/d + (A*a*atan(sin(c/2 + (d*x)/2) /cos(c/2 + (d*x)/2)))/d + (2*B*b*atan(sin(c/2 + (d*x)/2)/cos(c/2 + (d*x)/2 )))/d + (2*C*a*atan(sin(c/2 + (d*x)/2)/cos(c/2 + (d*x)/2)))/d + (2*C*b*ata nh(sin(c/2 + (d*x)/2)/cos(c/2 + (d*x)/2)))/d + (A*a*sin(2*c + 2*d*x))/(4*d )