Fuente TeX:

3\frac{\sqrt 2}{\pi} +\frac{\pi-5 \sqrt 2}{\pi} \int_{1}^ {4} \frac{1}{\pi x+5} dx= 3\frac{\sqrt 2}{\pi} +\frac{\pi-5 \sqrt 2}{\pi^ 2} \int_{1}^ {4} \frac{1}{ x+\frac{5}{\pi}} dx.