Integrand size = 12, antiderivative size = 53 \[ \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx=-\frac {\text {arctanh}\left (\frac {\sin (3 x)}{\sqrt {2} \sqrt {1-\cos (3 x)}}\right )}{6 \sqrt {2}}-\frac {\sin (3 x)}{6 (1-\cos (3 x))^{3/2}} \]
-1/6*sin(3*x)/(1-cos(3*x))^(3/2)-1/12*arctanh(1/2*sin(3*x)*2^(1/2)/(1-cos( 3*x))^(1/2))*2^(1/2)
Time = 0.19 (sec) , antiderivative size = 61, normalized size of antiderivative = 1.15 \[ \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx=-\frac {\left (\csc ^2\left (\frac {3 x}{4}\right )+4 \log \left (\cos \left (\frac {3 x}{4}\right )\right )-4 \log \left (\sin \left (\frac {3 x}{4}\right )\right )-\sec ^2\left (\frac {3 x}{4}\right )\right ) \sin ^3\left (\frac {3 x}{2}\right )}{12 (1-\cos (3 x))^{3/2}} \]
-1/12*((Csc[(3*x)/4]^2 + 4*Log[Cos[(3*x)/4]] - 4*Log[Sin[(3*x)/4]] - Sec[( 3*x)/4]^2)*Sin[(3*x)/2]^3)/(1 - Cos[3*x])^(3/2)
Time = 0.24 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.417, Rules used = {3042, 3129, 3042, 3128, 219}
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.
\(\displaystyle \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \int \frac {1}{\left (1-\sin \left (3 x+\frac {\pi }{2}\right )\right )^{3/2}}dx\) |
\(\Big \downarrow \) 3129 |
\(\displaystyle \frac {1}{4} \int \frac {1}{\sqrt {1-\cos (3 x)}}dx-\frac {\sin (3 x)}{6 (1-\cos (3 x))^{3/2}}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {1}{4} \int \frac {1}{\sqrt {1-\sin \left (3 x+\frac {\pi }{2}\right )}}dx-\frac {\sin (3 x)}{6 (1-\cos (3 x))^{3/2}}\) |
\(\Big \downarrow \) 3128 |
\(\displaystyle -\frac {1}{6} \int \frac {1}{2-\frac {\sin ^2(3 x)}{1-\cos (3 x)}}d\frac {\sin (3 x)}{\sqrt {1-\cos (3 x)}}-\frac {\sin (3 x)}{6 (1-\cos (3 x))^{3/2}}\) |
\(\Big \downarrow \) 219 |
\(\displaystyle -\frac {\text {arctanh}\left (\frac {\sin (3 x)}{\sqrt {2} \sqrt {1-\cos (3 x)}}\right )}{6 \sqrt {2}}-\frac {\sin (3 x)}{6 (1-\cos (3 x))^{3/2}}\) |
-1/6*ArcTanh[Sin[3*x]/(Sqrt[2]*Sqrt[1 - Cos[3*x]])]/Sqrt[2] - Sin[3*x]/(6* (1 - Cos[3*x])^(3/2))
3.4.94.3.1 Defintions of rubi rules used
Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(1/(Rt[a, 2]*Rt[-b, 2]))* ArcTanh[Rt[-b, 2]*(x/Rt[a, 2])], x] /; FreeQ[{a, b}, x] && NegQ[a/b] && (Gt Q[a, 0] || LtQ[b, 0])
Int[1/Sqrt[(a_) + (b_.)*sin[(c_.) + (d_.)*(x_)]], x_Symbol] :> Simp[-2/d Subst[Int[1/(2*a - x^2), x], x, b*(Cos[c + d*x]/Sqrt[a + b*Sin[c + d*x]])], x] /; FreeQ[{a, b, c, d}, x] && EqQ[a^2 - b^2, 0]
Int[((a_) + (b_.)*sin[(c_.) + (d_.)*(x_)])^(n_), x_Symbol] :> Simp[b*Cos[c + d*x]*((a + b*Sin[c + d*x])^n/(a*d*(2*n + 1))), x] + Simp[(n + 1)/(a*(2*n + 1)) Int[(a + b*Sin[c + d*x])^(n + 1), x], x] /; FreeQ[{a, b, c, d}, x] && EqQ[a^2 - b^2, 0] && LtQ[n, -1] && IntegerQ[2*n]
Time = 0.51 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.98
method | result | size |
default | \(-\frac {\left (\frac {\cos \left (\frac {3 x}{2}\right )}{2}+\frac {\left (\ln \left (\cos \left (\frac {3 x}{2}\right )+1\right )-\ln \left (\cos \left (\frac {3 x}{2}\right )-1\right )\right ) \left (\sin ^{2}\left (\frac {3 x}{2}\right )\right )}{4}\right ) \sqrt {2}}{3 \sin \left (\frac {3 x}{2}\right ) \sqrt {2-2 \cos \left (3 x \right )}}\) | \(52\) |
-1/6*(1/2*cos(3/2*x)+1/4*(ln(cos(3/2*x)+1)-ln(cos(3/2*x)-1))*sin(3/2*x)^2) /sin(3/2*x)*2^(1/2)/(sin(3/2*x)^2)^(1/2)
Leaf count of result is larger than twice the leaf count of optimal. 107 vs. \(2 (42) = 84\).
Time = 0.27 (sec) , antiderivative size = 107, normalized size of antiderivative = 2.02 \[ \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx=\frac {{\left (\sqrt {2} \cos \left (3 \, x\right ) - \sqrt {2}\right )} \log \left (-\frac {{\left (\cos \left (3 \, x\right ) + 3\right )} \sin \left (3 \, x\right ) - 2 \, {\left (\sqrt {2} \cos \left (3 \, x\right ) + \sqrt {2}\right )} \sqrt {-\cos \left (3 \, x\right ) + 1}}{{\left (\cos \left (3 \, x\right ) - 1\right )} \sin \left (3 \, x\right )}\right ) \sin \left (3 \, x\right ) + 4 \, {\left (\cos \left (3 \, x\right ) + 1\right )} \sqrt {-\cos \left (3 \, x\right ) + 1}}{24 \, {\left (\cos \left (3 \, x\right ) - 1\right )} \sin \left (3 \, x\right )} \]
1/24*((sqrt(2)*cos(3*x) - sqrt(2))*log(-((cos(3*x) + 3)*sin(3*x) - 2*(sqrt (2)*cos(3*x) + sqrt(2))*sqrt(-cos(3*x) + 1))/((cos(3*x) - 1)*sin(3*x)))*si n(3*x) + 4*(cos(3*x) + 1)*sqrt(-cos(3*x) + 1))/((cos(3*x) - 1)*sin(3*x))
\[ \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx=\int \frac {1}{\left (1 - \cos {\left (3 x \right )}\right )^{\frac {3}{2}}}\, dx \]
Leaf count of result is larger than twice the leaf count of optimal. 433 vs. \(2 (42) = 84\).
Time = 0.33 (sec) , antiderivative size = 433, normalized size of antiderivative = 8.17 \[ \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx=\frac {4 \, {\left (\sin \left (6 \, x\right ) - 2 \, \sin \left (3 \, x\right )\right )} \cos \left (\frac {3}{2} \, \pi + \frac {3}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right ) - 4 \, {\left (\sin \left (6 \, x\right ) - 2 \, \sin \left (3 \, x\right )\right )} \cos \left (\frac {1}{2} \, \pi + \frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right ) + {\left (2 \, {\left (2 \, \cos \left (3 \, x\right ) - 1\right )} \cos \left (6 \, x\right ) - \cos \left (6 \, x\right )^{2} - 4 \, \cos \left (3 \, x\right )^{2} - \sin \left (6 \, x\right )^{2} + 4 \, \sin \left (6 \, x\right ) \sin \left (3 \, x\right ) - 4 \, \sin \left (3 \, x\right )^{2} + 4 \, \cos \left (3 \, x\right ) - 1\right )} \log \left (\cos \left (\frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right )^{2} + \sin \left (\frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right )^{2} + 2 \, \cos \left (\frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right ) + 1\right ) - {\left (2 \, {\left (2 \, \cos \left (3 \, x\right ) - 1\right )} \cos \left (6 \, x\right ) - \cos \left (6 \, x\right )^{2} - 4 \, \cos \left (3 \, x\right )^{2} - \sin \left (6 \, x\right )^{2} + 4 \, \sin \left (6 \, x\right ) \sin \left (3 \, x\right ) - 4 \, \sin \left (3 \, x\right )^{2} + 4 \, \cos \left (3 \, x\right ) - 1\right )} \log \left (\cos \left (\frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right )^{2} + \sin \left (\frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right )^{2} - 2 \, \cos \left (\frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right ) + 1\right ) - 4 \, {\left (\cos \left (6 \, x\right ) - 2 \, \cos \left (3 \, x\right ) + 1\right )} \sin \left (\frac {3}{2} \, \pi + \frac {3}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right ) + 4 \, {\left (\cos \left (6 \, x\right ) - 2 \, \cos \left (3 \, x\right ) + 1\right )} \sin \left (\frac {1}{2} \, \pi + \frac {1}{2} \, \arctan \left (\sin \left (3 \, x\right ), \cos \left (3 \, x\right )\right )\right )}{12 \, {\left (\sqrt {2} \cos \left (6 \, x\right )^{2} + 4 \, \sqrt {2} \cos \left (3 \, x\right )^{2} + \sqrt {2} \sin \left (6 \, x\right )^{2} - 4 \, \sqrt {2} \sin \left (6 \, x\right ) \sin \left (3 \, x\right ) + 4 \, \sqrt {2} \sin \left (3 \, x\right )^{2} - 2 \, {\left (2 \, \sqrt {2} \cos \left (3 \, x\right ) - \sqrt {2}\right )} \cos \left (6 \, x\right ) - 4 \, \sqrt {2} \cos \left (3 \, x\right ) + \sqrt {2}\right )}} \]
1/12*(4*(sin(6*x) - 2*sin(3*x))*cos(3/2*pi + 3/2*arctan2(sin(3*x), cos(3*x ))) - 4*(sin(6*x) - 2*sin(3*x))*cos(1/2*pi + 1/2*arctan2(sin(3*x), cos(3*x ))) + (2*(2*cos(3*x) - 1)*cos(6*x) - cos(6*x)^2 - 4*cos(3*x)^2 - sin(6*x)^ 2 + 4*sin(6*x)*sin(3*x) - 4*sin(3*x)^2 + 4*cos(3*x) - 1)*log(cos(1/2*arcta n2(sin(3*x), cos(3*x)))^2 + sin(1/2*arctan2(sin(3*x), cos(3*x)))^2 + 2*cos (1/2*arctan2(sin(3*x), cos(3*x))) + 1) - (2*(2*cos(3*x) - 1)*cos(6*x) - co s(6*x)^2 - 4*cos(3*x)^2 - sin(6*x)^2 + 4*sin(6*x)*sin(3*x) - 4*sin(3*x)^2 + 4*cos(3*x) - 1)*log(cos(1/2*arctan2(sin(3*x), cos(3*x)))^2 + sin(1/2*arc tan2(sin(3*x), cos(3*x)))^2 - 2*cos(1/2*arctan2(sin(3*x), cos(3*x))) + 1) - 4*(cos(6*x) - 2*cos(3*x) + 1)*sin(3/2*pi + 3/2*arctan2(sin(3*x), cos(3*x ))) + 4*(cos(6*x) - 2*cos(3*x) + 1)*sin(1/2*pi + 1/2*arctan2(sin(3*x), cos (3*x))))/(sqrt(2)*cos(6*x)^2 + 4*sqrt(2)*cos(3*x)^2 + sqrt(2)*sin(6*x)^2 - 4*sqrt(2)*sin(6*x)*sin(3*x) + 4*sqrt(2)*sin(3*x)^2 - 2*(2*sqrt(2)*cos(3*x ) - sqrt(2))*cos(6*x) - 4*sqrt(2)*cos(3*x) + sqrt(2))
Leaf count of result is larger than twice the leaf count of optimal. 100 vs. \(2 (42) = 84\).
Time = 0.31 (sec) , antiderivative size = 100, normalized size of antiderivative = 1.89 \[ \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx=-\frac {\sqrt {2} {\left (\frac {2 \, {\left (\cos \left (\frac {3}{2} \, x\right ) - 1\right )}}{\cos \left (\frac {3}{2} \, x\right ) + 1} - 1\right )} {\left (\cos \left (\frac {3}{2} \, x\right ) + 1\right )}}{48 \, {\left (\cos \left (\frac {3}{2} \, x\right ) - 1\right )} \mathrm {sgn}\left (\sin \left (\frac {3}{2} \, x\right )\right )} + \frac {\sqrt {2} \log \left (-\frac {\cos \left (\frac {3}{2} \, x\right ) - 1}{\cos \left (\frac {3}{2} \, x\right ) + 1}\right )}{24 \, \mathrm {sgn}\left (\sin \left (\frac {3}{2} \, x\right )\right )} - \frac {\sqrt {2} {\left (\cos \left (\frac {3}{2} \, x\right ) - 1\right )}}{48 \, {\left (\cos \left (\frac {3}{2} \, x\right ) + 1\right )} \mathrm {sgn}\left (\sin \left (\frac {3}{2} \, x\right )\right )} \]
-1/48*sqrt(2)*(2*(cos(3/2*x) - 1)/(cos(3/2*x) + 1) - 1)*(cos(3/2*x) + 1)/( (cos(3/2*x) - 1)*sgn(sin(3/2*x))) + 1/24*sqrt(2)*log(-(cos(3/2*x) - 1)/(co s(3/2*x) + 1))/sgn(sin(3/2*x)) - 1/48*sqrt(2)*(cos(3/2*x) - 1)/((cos(3/2*x ) + 1)*sgn(sin(3/2*x)))
Timed out. \[ \int \frac {1}{(1-\cos (3 x))^{3/2}} \, dx=\int \frac {1}{{\left (1-\cos \left (3\,x\right )\right )}^{3/2}} \,d x \]