Integrand size = 19, antiderivative size = 72 \[ \int \frac {\cos (c+d x)}{(a+a \sec (c+d x))^2} \, dx=-\frac {2 x}{a^2}+\frac {10 \sin (c+d x)}{3 a^2 d}-\frac {2 \sin (c+d x)}{a^2 d (1+\sec (c+d x))}-\frac {\sin (c+d x)}{3 d (a+a \sec (c+d x))^2} \]
-2*x/a^2+10/3*sin(d*x+c)/a^2/d-2*sin(d*x+c)/a^2/d/(1+sec(d*x+c))-1/3*sin(d *x+c)/d/(a+a*sec(d*x+c))^2
Time = 0.91 (sec) , antiderivative size = 97, normalized size of antiderivative = 1.35 \[ \int \frac {\cos (c+d x)}{(a+a \sec (c+d x))^2} \, dx=\frac {\sin (c+d x) \left (24 \arcsin (\cos (c+d x)) \cos ^4\left (\frac {1}{2} (c+d x)\right )+\left (10+14 \cos (c+d x)+3 \cos ^2(c+d x)\right ) \sqrt {\sin ^2(c+d x)}\right )}{3 a^2 d \sqrt {1-\cos (c+d x)} (1+\cos (c+d x))^{5/2}} \]
(Sin[c + d*x]*(24*ArcSin[Cos[c + d*x]]*Cos[(c + d*x)/2]^4 + (10 + 14*Cos[c + d*x] + 3*Cos[c + d*x]^2)*Sqrt[Sin[c + d*x]^2]))/(3*a^2*d*Sqrt[1 - Cos[c + d*x]]*(1 + Cos[c + d*x])^(5/2))
Time = 0.56 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.11, number of steps used = 10, number of rules used = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.526, Rules used = {3042, 4304, 27, 3042, 4508, 3042, 4274, 24, 3042, 3117}
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.
\(\displaystyle \int \frac {\cos (c+d x)}{(a \sec (c+d x)+a)^2} \, dx\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \int \frac {1}{\csc \left (c+d x+\frac {\pi }{2}\right ) \left (a \csc \left (c+d x+\frac {\pi }{2}\right )+a\right )^2}dx\) |
\(\Big \downarrow \) 4304 |
\(\displaystyle -\frac {\int -\frac {2 \cos (c+d x) (2 a-a \sec (c+d x))}{\sec (c+d x) a+a}dx}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {2 \int \frac {\cos (c+d x) (2 a-a \sec (c+d x))}{\sec (c+d x) a+a}dx}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {2 \int \frac {2 a-a \csc \left (c+d x+\frac {\pi }{2}\right )}{\csc \left (c+d x+\frac {\pi }{2}\right ) \left (\csc \left (c+d x+\frac {\pi }{2}\right ) a+a\right )}dx}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 4508 |
\(\displaystyle \frac {2 \left (\frac {\int \cos (c+d x) \left (5 a^2-3 a^2 \sec (c+d x)\right )dx}{a^2}-\frac {3 \sin (c+d x)}{d (\sec (c+d x)+1)}\right )}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {2 \left (\frac {\int \frac {5 a^2-3 a^2 \csc \left (c+d x+\frac {\pi }{2}\right )}{\csc \left (c+d x+\frac {\pi }{2}\right )}dx}{a^2}-\frac {3 \sin (c+d x)}{d (\sec (c+d x)+1)}\right )}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 4274 |
\(\displaystyle \frac {2 \left (\frac {5 a^2 \int \cos (c+d x)dx-3 a^2 \int 1dx}{a^2}-\frac {3 \sin (c+d x)}{d (\sec (c+d x)+1)}\right )}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 24 |
\(\displaystyle \frac {2 \left (\frac {5 a^2 \int \cos (c+d x)dx-3 a^2 x}{a^2}-\frac {3 \sin (c+d x)}{d (\sec (c+d x)+1)}\right )}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {2 \left (\frac {5 a^2 \int \sin \left (c+d x+\frac {\pi }{2}\right )dx-3 a^2 x}{a^2}-\frac {3 \sin (c+d x)}{d (\sec (c+d x)+1)}\right )}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
\(\Big \downarrow \) 3117 |
\(\displaystyle \frac {2 \left (\frac {\frac {5 a^2 \sin (c+d x)}{d}-3 a^2 x}{a^2}-\frac {3 \sin (c+d x)}{d (\sec (c+d x)+1)}\right )}{3 a^2}-\frac {\sin (c+d x)}{3 d (a \sec (c+d x)+a)^2}\) |
-1/3*Sin[c + d*x]/(d*(a + a*Sec[c + d*x])^2) + (2*((-3*Sin[c + d*x])/(d*(1 + Sec[c + d*x])) + (-3*a^2*x + (5*a^2*Sin[c + d*x])/d)/a^2))/(3*a^2)
3.1.58.3.1 Defintions of rubi rules used
Int[(a_)*(Fx_), x_Symbol] :> Simp[a Int[Fx, x], x] /; FreeQ[a, x] && !Ma tchQ[Fx, (b_)*(Gx_) /; FreeQ[b, x]]
Int[sin[Pi/2 + (c_.) + (d_.)*(x_)], x_Symbol] :> Simp[Sin[c + d*x]/d, x] /; FreeQ[{c, d}, x]
Int[(csc[(e_.) + (f_.)*(x_)]*(d_.))^(n_.)*(csc[(e_.) + (f_.)*(x_)]*(b_.) + (a_)), x_Symbol] :> Simp[a Int[(d*Csc[e + f*x])^n, x], x] + Simp[b/d In t[(d*Csc[e + f*x])^(n + 1), x], x] /; FreeQ[{a, b, d, e, f, n}, x]
Int[(csc[(e_.) + (f_.)*(x_)]*(d_.))^(n_)*(csc[(e_.) + (f_.)*(x_)]*(b_.) + ( a_))^(m_), x_Symbol] :> Simp[(-Cot[e + f*x])*(a + b*Csc[e + f*x])^m*((d*Csc [e + f*x])^n/(f*(2*m + 1))), x] + Simp[1/(a^2*(2*m + 1)) Int[(a + b*Csc[e + f*x])^(m + 1)*(d*Csc[e + f*x])^n*(a*(2*m + n + 1) - b*(m + n + 1)*Csc[e + f*x]), x], x] /; FreeQ[{a, b, d, e, f, n}, x] && EqQ[a^2 - b^2, 0] && LtQ [m, -1] && (IntegersQ[2*m, 2*n] || IntegerQ[m])
Int[(csc[(e_.) + (f_.)*(x_)]*(d_.))^(n_)*(csc[(e_.) + (f_.)*(x_)]*(b_.) + ( a_))^(m_)*(csc[(e_.) + (f_.)*(x_)]*(B_.) + (A_)), x_Symbol] :> Simp[(-(A*b - a*B))*Cot[e + f*x]*(a + b*Csc[e + f*x])^m*((d*Csc[e + f*x])^n/(b*f*(2*m + 1))), x] - Simp[1/(a^2*(2*m + 1)) Int[(a + b*Csc[e + f*x])^(m + 1)*(d*Cs c[e + f*x])^n*Simp[b*B*n - a*A*(2*m + n + 1) + (A*b - a*B)*(m + n + 1)*Csc[ e + f*x], x], x], x] /; FreeQ[{a, b, d, e, f, A, B, n}, x] && NeQ[A*b - a*B , 0] && EqQ[a^2 - b^2, 0] && LtQ[m, -2^(-1)] && !GtQ[n, 0]
Time = 0.41 (sec) , antiderivative size = 55, normalized size of antiderivative = 0.76
method | result | size |
parallelrisch | \(\frac {7 \tan \left (\frac {d x}{2}+\frac {c}{2}\right ) \left (\cos \left (d x +c \right )+\frac {3 \cos \left (2 d x +2 c \right )}{28}+\frac {23}{28}\right ) \sec \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}-6 d x}{3 a^{2} d}\) | \(55\) |
derivativedivides | \(\frac {-\frac {\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{3}}{3}+5 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )+\frac {4 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{1+\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}}-8 \arctan \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )\right )}{2 d \,a^{2}}\) | \(72\) |
default | \(\frac {-\frac {\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{3}}{3}+5 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )+\frac {4 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{1+\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}}-8 \arctan \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )\right )}{2 d \,a^{2}}\) | \(72\) |
risch | \(-\frac {2 x}{a^{2}}-\frac {i {\mathrm e}^{i \left (d x +c \right )}}{2 a^{2} d}+\frac {i {\mathrm e}^{-i \left (d x +c \right )}}{2 a^{2} d}+\frac {2 i \left (9 \,{\mathrm e}^{2 i \left (d x +c \right )}+15 \,{\mathrm e}^{i \left (d x +c \right )}+8\right )}{3 d \,a^{2} \left ({\mathrm e}^{i \left (d x +c \right )}+1\right )^{3}}\) | \(90\) |
norman | \(\frac {-\frac {2 x}{a}+\frac {9 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{2 a d}+\frac {7 \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{3}}{3 a d}-\frac {\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{5}}{6 a d}-\frac {2 x \tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}}{a}}{a \left (1+\tan \left (\frac {d x}{2}+\frac {c}{2}\right )^{2}\right )}\) | \(99\) |
1/3*(7*tan(1/2*d*x+1/2*c)*(cos(d*x+c)+3/28*cos(2*d*x+2*c)+23/28)*sec(1/2*d *x+1/2*c)^2-6*d*x)/a^2/d
Time = 0.26 (sec) , antiderivative size = 90, normalized size of antiderivative = 1.25 \[ \int \frac {\cos (c+d x)}{(a+a \sec (c+d x))^2} \, dx=-\frac {6 \, d x \cos \left (d x + c\right )^{2} + 12 \, d x \cos \left (d x + c\right ) + 6 \, d x - {\left (3 \, \cos \left (d x + c\right )^{2} + 14 \, \cos \left (d x + c\right ) + 10\right )} \sin \left (d x + c\right )}{3 \, {\left (a^{2} d \cos \left (d x + c\right )^{2} + 2 \, a^{2} d \cos \left (d x + c\right ) + a^{2} d\right )}} \]
-1/3*(6*d*x*cos(d*x + c)^2 + 12*d*x*cos(d*x + c) + 6*d*x - (3*cos(d*x + c) ^2 + 14*cos(d*x + c) + 10)*sin(d*x + c))/(a^2*d*cos(d*x + c)^2 + 2*a^2*d*c os(d*x + c) + a^2*d)
\[ \int \frac {\cos (c+d x)}{(a+a \sec (c+d x))^2} \, dx=\frac {\int \frac {\cos {\left (c + d x \right )}}{\sec ^{2}{\left (c + d x \right )} + 2 \sec {\left (c + d x \right )} + 1}\, dx}{a^{2}} \]
Time = 0.37 (sec) , antiderivative size = 118, normalized size of antiderivative = 1.64 \[ \int \frac {\cos (c+d x)}{(a+a \sec (c+d x))^2} \, dx=\frac {\frac {\frac {15 \, \sin \left (d x + c\right )}{\cos \left (d x + c\right ) + 1} - \frac {\sin \left (d x + c\right )^{3}}{{\left (\cos \left (d x + c\right ) + 1\right )}^{3}}}{a^{2}} - \frac {24 \, \arctan \left (\frac {\sin \left (d x + c\right )}{\cos \left (d x + c\right ) + 1}\right )}{a^{2}} + \frac {12 \, \sin \left (d x + c\right )}{{\left (a^{2} + \frac {a^{2} \sin \left (d x + c\right )^{2}}{{\left (\cos \left (d x + c\right ) + 1\right )}^{2}}\right )} {\left (\cos \left (d x + c\right ) + 1\right )}}}{6 \, d} \]
1/6*((15*sin(d*x + c)/(cos(d*x + c) + 1) - sin(d*x + c)^3/(cos(d*x + c) + 1)^3)/a^2 - 24*arctan(sin(d*x + c)/(cos(d*x + c) + 1))/a^2 + 12*sin(d*x + c)/((a^2 + a^2*sin(d*x + c)^2/(cos(d*x + c) + 1)^2)*(cos(d*x + c) + 1)))/d
Time = 0.28 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.10 \[ \int \frac {\cos (c+d x)}{(a+a \sec (c+d x))^2} \, dx=-\frac {\frac {12 \, {\left (d x + c\right )}}{a^{2}} - \frac {12 \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )}{{\left (\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{2} + 1\right )} a^{2}} + \frac {a^{4} \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{3} - 15 \, a^{4} \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )}{a^{6}}}{6 \, d} \]
-1/6*(12*(d*x + c)/a^2 - 12*tan(1/2*d*x + 1/2*c)/((tan(1/2*d*x + 1/2*c)^2 + 1)*a^2) + (a^4*tan(1/2*d*x + 1/2*c)^3 - 15*a^4*tan(1/2*d*x + 1/2*c))/a^6 )/d
Time = 13.50 (sec) , antiderivative size = 91, normalized size of antiderivative = 1.26 \[ \int \frac {\cos (c+d x)}{(a+a \sec (c+d x))^2} \, dx=-\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )-16\,{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}^2\,\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )-12\,{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}^4\,\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )+12\,{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}^3\,\left (c+d\,x\right )}{6\,a^2\,d\,{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}^3} \]