28.17 Problem number 75

\[ \int \frac {\text {CosIntegral}(b x)}{x^2} \, dx \]

Optimal antiderivative \[ -\frac {\cosineIntegral \left (b x \right )}{x}-\frac {\cos \left (b x \right )}{x}-b \sinIntegral \left (b x \right ) \]

command

integrate(fresnel_cos(b*x)/x^2,x, algorithm="maxima")

Maxima 5.46 SBCL 2.0.1.debian via sagemath 9.6 output

\[ \frac {1}{4} \, b {\left ({\rm Ei}\left (\frac {1}{2} i \, \pi b^{2} x^{2}\right ) + {\rm Ei}\left (-\frac {1}{2} i \, \pi b^{2} x^{2}\right )\right )} - \frac {\operatorname {C}\left (b x\right )}{x} \]

Maxima 5.44 via sagemath 9.3 output

\[ \int \frac {{\rm Ci}\left (b x\right )}{x^{2}}\,{d x} \]________________________________________________________________________________________