Integrand size = 25, antiderivative size = 73 \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=\frac {a x}{b^2}-\frac {2 \sqrt {a-b} \sqrt {a+b} \arctan \left (\frac {\sqrt {a-b} \tan \left (\frac {1}{2} (c+d x)\right )}{\sqrt {a+b}}\right )}{b^2 d}-\frac {\sin (c+d x)}{b d} \]
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Time = 0.11 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.160, Rules used = {3103, 2814, 2738, 211} \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=-\frac {2 \sqrt {a-b} \sqrt {a+b} \arctan \left (\frac {\sqrt {a-b} \tan \left (\frac {1}{2} (c+d x)\right )}{\sqrt {a+b}}\right )}{b^2 d}+\frac {a x}{b^2}-\frac {\sin (c+d x)}{b d} \]
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Rule 211
Rule 2738
Rule 2814
Rule 3103
Rubi steps \begin{align*} \text {integral}& = -\frac {\sin (c+d x)}{b d}+\frac {\int \frac {b+a \cos (c+d x)}{a+b \cos (c+d x)} \, dx}{b} \\ & = \frac {a x}{b^2}-\frac {\sin (c+d x)}{b d}-\frac {\left (a^2-b^2\right ) \int \frac {1}{a+b \cos (c+d x)} \, dx}{b^2} \\ & = \frac {a x}{b^2}-\frac {\sin (c+d x)}{b d}-\frac {\left (2 \left (a^2-b^2\right )\right ) \text {Subst}\left (\int \frac {1}{a+b+(a-b) x^2} \, dx,x,\tan \left (\frac {1}{2} (c+d x)\right )\right )}{b^2 d} \\ & = \frac {a x}{b^2}-\frac {2 \sqrt {a-b} \sqrt {a+b} \arctan \left (\frac {\sqrt {a-b} \tan \left (\frac {1}{2} (c+d x)\right )}{\sqrt {a+b}}\right )}{b^2 d}-\frac {\sin (c+d x)}{b d} \\ \end{align*}
Time = 0.31 (sec) , antiderivative size = 69, normalized size of antiderivative = 0.95 \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=\frac {a (c+d x)-2 \sqrt {-a^2+b^2} \text {arctanh}\left (\frac {(a-b) \tan \left (\frac {1}{2} (c+d x)\right )}{\sqrt {-a^2+b^2}}\right )-b \sin (c+d x)}{b^2 d} \]
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Time = 1.69 (sec) , antiderivative size = 102, normalized size of antiderivative = 1.40
method | result | size |
derivativedivides | \(\frac {-\frac {2 \left (a +b \right ) \left (a -b \right ) \arctan \left (\frac {\left (a -b \right ) \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{\sqrt {\left (a -b \right ) \left (a +b \right )}}\right )}{b^{2} \sqrt {\left (a -b \right ) \left (a +b \right )}}+\frac {-\frac {2 b \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{1+\tan ^{2}\left (\frac {d x}{2}+\frac {c}{2}\right )}+2 a \arctan \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )\right )}{b^{2}}}{d}\) | \(102\) |
default | \(\frac {-\frac {2 \left (a +b \right ) \left (a -b \right ) \arctan \left (\frac {\left (a -b \right ) \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{\sqrt {\left (a -b \right ) \left (a +b \right )}}\right )}{b^{2} \sqrt {\left (a -b \right ) \left (a +b \right )}}+\frac {-\frac {2 b \tan \left (\frac {d x}{2}+\frac {c}{2}\right )}{1+\tan ^{2}\left (\frac {d x}{2}+\frac {c}{2}\right )}+2 a \arctan \left (\tan \left (\frac {d x}{2}+\frac {c}{2}\right )\right )}{b^{2}}}{d}\) | \(102\) |
risch | \(\frac {a x}{b^{2}}+\frac {i {\mathrm e}^{i \left (d x +c \right )}}{2 b d}-\frac {i {\mathrm e}^{-i \left (d x +c \right )}}{2 b d}+\frac {\sqrt {-a^{2}+b^{2}}\, \ln \left ({\mathrm e}^{i \left (d x +c \right )}+\frac {i \sqrt {-a^{2}+b^{2}}+a}{b}\right )}{d \,b^{2}}-\frac {\sqrt {-a^{2}+b^{2}}\, \ln \left ({\mathrm e}^{i \left (d x +c \right )}-\frac {i \sqrt {-a^{2}+b^{2}}-a}{b}\right )}{d \,b^{2}}\) | \(146\) |
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Time = 0.31 (sec) , antiderivative size = 202, normalized size of antiderivative = 2.77 \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=\left [\frac {2 \, a d x - 2 \, b \sin \left (d x + c\right ) + \sqrt {-a^{2} + b^{2}} \log \left (\frac {2 \, a b \cos \left (d x + c\right ) + {\left (2 \, a^{2} - b^{2}\right )} \cos \left (d x + c\right )^{2} + 2 \, \sqrt {-a^{2} + b^{2}} {\left (a \cos \left (d x + c\right ) + b\right )} \sin \left (d x + c\right ) - a^{2} + 2 \, b^{2}}{b^{2} \cos \left (d x + c\right )^{2} + 2 \, a b \cos \left (d x + c\right ) + a^{2}}\right )}{2 \, b^{2} d}, \frac {a d x - b \sin \left (d x + c\right ) - \sqrt {a^{2} - b^{2}} \arctan \left (-\frac {a \cos \left (d x + c\right ) + b}{\sqrt {a^{2} - b^{2}} \sin \left (d x + c\right )}\right )}{b^{2} d}\right ] \]
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Leaf count of result is larger than twice the leaf count of optimal. 1039 vs. \(2 (61) = 122\).
Time = 52.51 (sec) , antiderivative size = 1039, normalized size of antiderivative = 14.23 \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=\text {Too large to display} \]
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Exception generated. \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=\text {Exception raised: ValueError} \]
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Time = 0.31 (sec) , antiderivative size = 122, normalized size of antiderivative = 1.67 \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=\frac {\frac {{\left (d x + c\right )} a}{b^{2}} + \frac {2 \, {\left (\pi \left \lfloor \frac {d x + c}{2 \, \pi } + \frac {1}{2} \right \rfloor \mathrm {sgn}\left (-2 \, a + 2 \, b\right ) + \arctan \left (-\frac {a \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right ) - b \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )}{\sqrt {a^{2} - b^{2}}}\right )\right )} \sqrt {a^{2} - b^{2}}}{b^{2}} - \frac {2 \, \tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )}{{\left (\tan \left (\frac {1}{2} \, d x + \frac {1}{2} \, c\right )^{2} + 1\right )} b}}{d} \]
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Time = 1.94 (sec) , antiderivative size = 112, normalized size of antiderivative = 1.53 \[ \int \frac {1-\cos ^2(c+d x)}{a+b \cos (c+d x)} \, dx=\frac {2\,\mathrm {atanh}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )\,\sqrt {b^2-a^2}}{a\,\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )+b\,\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )\,\sqrt {b^2-a^2}}{b^2\,d}-\frac {\sin \left (c+d\,x\right )}{b\,d}+\frac {2\,a\,\mathrm {atan}\left (\frac {\sin \left (\frac {c}{2}+\frac {d\,x}{2}\right )}{\cos \left (\frac {c}{2}+\frac {d\,x}{2}\right )}\right )}{b^2\,d} \]
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