Integrand size = 11, antiderivative size = 36 \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=-\frac {\text {arctanh}\left (\frac {a \cos (x)-b \sin (x)}{\sqrt {a^2+b^2}}\right )}{\sqrt {a^2+b^2}} \]
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Time = 0.02 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.182, Rules used = {3153, 212} \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=-\frac {\text {arctanh}\left (\frac {a \cos (x)-b \sin (x)}{\sqrt {a^2+b^2}}\right )}{\sqrt {a^2+b^2}} \]
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Rule 212
Rule 3153
Rubi steps \begin{align*} \text {integral}& = -\text {Subst}\left (\int \frac {1}{a^2+b^2-x^2} \, dx,x,a \cos (x)-b \sin (x)\right ) \\ & = -\frac {\text {arctanh}\left (\frac {a \cos (x)-b \sin (x)}{\sqrt {a^2+b^2}}\right )}{\sqrt {a^2+b^2}} \\ \end{align*}
Time = 0.06 (sec) , antiderivative size = 38, normalized size of antiderivative = 1.06 \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=\frac {2 \text {arctanh}\left (\frac {-a+b \tan \left (\frac {x}{2}\right )}{\sqrt {a^2+b^2}}\right )}{\sqrt {a^2+b^2}} \]
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Time = 0.28 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.97
method | result | size |
default | \(-\frac {2 \,\operatorname {arctanh}\left (\frac {-2 b \tan \left (\frac {x}{2}\right )+2 a}{2 \sqrt {a^{2}+b^{2}}}\right )}{\sqrt {a^{2}+b^{2}}}\) | \(35\) |
risch | \(\frac {\ln \left ({\mathrm e}^{i x}+\frac {i b -a}{\sqrt {a^{2}+b^{2}}}\right )}{\sqrt {a^{2}+b^{2}}}-\frac {\ln \left ({\mathrm e}^{i x}-\frac {i b -a}{\sqrt {a^{2}+b^{2}}}\right )}{\sqrt {a^{2}+b^{2}}}\) | \(74\) |
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Leaf count of result is larger than twice the leaf count of optimal. 98 vs. \(2 (32) = 64\).
Time = 0.27 (sec) , antiderivative size = 98, normalized size of antiderivative = 2.72 \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=\frac {\log \left (-\frac {2 \, a b \cos \left (x\right ) \sin \left (x\right ) - {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} - a^{2} - 2 \, b^{2} + 2 \, \sqrt {a^{2} + b^{2}} {\left (a \cos \left (x\right ) - b \sin \left (x\right )\right )}}{2 \, a b \cos \left (x\right ) \sin \left (x\right ) - {\left (a^{2} - b^{2}\right )} \cos \left (x\right )^{2} + a^{2}}\right )}{2 \, \sqrt {a^{2} + b^{2}}} \]
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Result contains complex when optimal does not.
Time = 1.56 (sec) , antiderivative size = 121, normalized size of antiderivative = 3.36 \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=\begin {cases} \tilde {\infty } \left (- \log {\left (\tan {\left (\frac {x}{2} \right )} - 1 \right )} + \log {\left (\tan {\left (\frac {x}{2} \right )} + 1 \right )}\right ) & \text {for}\: a = 0 \wedge b = 0 \\\frac {\log {\left (\tan {\left (\frac {x}{2} \right )} \right )}}{a} & \text {for}\: b = 0 \\- \frac {i}{- i b \sin {\left (x \right )} + b \cos {\left (x \right )}} & \text {for}\: a = - i b \\\frac {i}{i b \sin {\left (x \right )} + b \cos {\left (x \right )}} & \text {for}\: a = i b \\- \frac {\log {\left (- \frac {a}{b} + \tan {\left (\frac {x}{2} \right )} - \frac {\sqrt {a^{2} + b^{2}}}{b} \right )}}{\sqrt {a^{2} + b^{2}}} + \frac {\log {\left (- \frac {a}{b} + \tan {\left (\frac {x}{2} \right )} + \frac {\sqrt {a^{2} + b^{2}}}{b} \right )}}{\sqrt {a^{2} + b^{2}}} & \text {otherwise} \end {cases} \]
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none
Time = 0.30 (sec) , antiderivative size = 61, normalized size of antiderivative = 1.69 \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=-\frac {\log \left (\frac {a - \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1} + \sqrt {a^{2} + b^{2}}}{a - \frac {b \sin \left (x\right )}{\cos \left (x\right ) + 1} - \sqrt {a^{2} + b^{2}}}\right )}{\sqrt {a^{2} + b^{2}}} \]
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none
Time = 0.30 (sec) , antiderivative size = 61, normalized size of antiderivative = 1.69 \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=-\frac {\log \left (\frac {{\left | 2 \, b \tan \left (\frac {1}{2} \, x\right ) - 2 \, a - 2 \, \sqrt {a^{2} + b^{2}} \right |}}{{\left | 2 \, b \tan \left (\frac {1}{2} \, x\right ) - 2 \, a + 2 \, \sqrt {a^{2} + b^{2}} \right |}}\right )}{\sqrt {a^{2} + b^{2}}} \]
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Time = 0.79 (sec) , antiderivative size = 31, normalized size of antiderivative = 0.86 \[ \int \frac {1}{b \cos (x)+a \sin (x)} \, dx=-\frac {2\,\mathrm {atanh}\left (\frac {a-b\,\mathrm {tan}\left (\frac {x}{2}\right )}{\sqrt {a^2+b^2}}\right )}{\sqrt {a^2+b^2}} \]
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