Integrand size = 14, antiderivative size = 37 \[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\frac {1}{4} \cos (2 a) \operatorname {CosIntegral}\left (2 b x^2\right )+\frac {\log (x)}{2}-\frac {1}{4} \sin (2 a) \text {Si}\left (2 b x^2\right ) \]
[Out]
Time = 0.07 (sec) , antiderivative size = 37, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {3485, 3459, 3457, 3456} \[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\frac {1}{4} \cos (2 a) \operatorname {CosIntegral}\left (2 b x^2\right )-\frac {1}{4} \sin (2 a) \text {Si}\left (2 b x^2\right )+\frac {\log (x)}{2} \]
[In]
[Out]
Rule 3456
Rule 3457
Rule 3459
Rule 3485
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {1}{2 x}+\frac {\cos \left (2 a+2 b x^2\right )}{2 x}\right ) \, dx \\ & = \frac {\log (x)}{2}+\frac {1}{2} \int \frac {\cos \left (2 a+2 b x^2\right )}{x} \, dx \\ & = \frac {\log (x)}{2}+\frac {1}{2} \cos (2 a) \int \frac {\cos \left (2 b x^2\right )}{x} \, dx-\frac {1}{2} \sin (2 a) \int \frac {\sin \left (2 b x^2\right )}{x} \, dx \\ & = \frac {1}{4} \cos (2 a) \operatorname {CosIntegral}\left (2 b x^2\right )+\frac {\log (x)}{2}-\frac {1}{4} \sin (2 a) \text {Si}\left (2 b x^2\right ) \\ \end{align*}
Time = 0.11 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.92 \[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\frac {1}{4} \left (\cos (2 a) \operatorname {CosIntegral}\left (2 b x^2\right )+2 \log (x)-\sin (2 a) \text {Si}\left (2 b x^2\right )\right ) \]
[In]
[Out]
Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.62 (sec) , antiderivative size = 68, normalized size of antiderivative = 1.84
method | result | size |
risch | \(\frac {\ln \left (x \right )}{2}+\frac {i {\mathrm e}^{-2 i a} \pi \,\operatorname {csgn}\left (b \,x^{2}\right )}{8}-\frac {i {\mathrm e}^{-2 i a} \operatorname {Si}\left (2 b \,x^{2}\right )}{4}-\frac {{\mathrm e}^{-2 i a} \operatorname {Ei}_{1}\left (-2 i b \,x^{2}\right )}{8}-\frac {{\mathrm e}^{2 i a} \operatorname {Ei}_{1}\left (-2 i b \,x^{2}\right )}{8}\) | \(68\) |
[In]
[Out]
none
Time = 0.25 (sec) , antiderivative size = 31, normalized size of antiderivative = 0.84 \[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\frac {1}{4} \, \cos \left (2 \, a\right ) \operatorname {Ci}\left (2 \, b x^{2}\right ) - \frac {1}{4} \, \sin \left (2 \, a\right ) \operatorname {Si}\left (2 \, b x^{2}\right ) + \frac {1}{2} \, \log \left (x\right ) \]
[In]
[Out]
\[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\int \frac {\cos ^{2}{\left (a + b x^{2} \right )}}{x}\, dx \]
[In]
[Out]
Result contains complex when optimal does not.
Time = 0.37 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.38 \[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\frac {1}{8} \, {\left ({\rm Ei}\left (2 i \, b x^{2}\right ) + {\rm Ei}\left (-2 i \, b x^{2}\right )\right )} \cos \left (2 \, a\right ) + \frac {1}{8} \, {\left (i \, {\rm Ei}\left (2 i \, b x^{2}\right ) - i \, {\rm Ei}\left (-2 i \, b x^{2}\right )\right )} \sin \left (2 \, a\right ) + \frac {1}{2} \, \log \left (x\right ) \]
[In]
[Out]
none
Time = 0.31 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.95 \[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\frac {1}{4} \, \cos \left (2 \, a\right ) \operatorname {Ci}\left (2 \, b x^{2}\right ) + \frac {1}{4} \, \sin \left (2 \, a\right ) \operatorname {Si}\left (-2 \, b x^{2}\right ) + \frac {1}{4} \, \log \left (b x^{2}\right ) \]
[In]
[Out]
Timed out. \[ \int \frac {\cos ^2\left (a+b x^2\right )}{x} \, dx=\int \frac {{\cos \left (b\,x^2+a\right )}^2}{x} \,d x \]
[In]
[Out]