3.5.6.3 Algorithm description to obtain the above solutions

Starting with

(y)nm=ax+by+c

Find the solution z of equation

znm=u

Where u now is a symbol. Lets say we found s1,s2, solutions (depending on what n,m are). Then for each solution si change it to be

si=bsi+a

Then write

dusi=x+c1

Then replace each with letter u in each si by new letter say z (the integration variable). Now the solution becomes

ax+by+cdzsi=x+c1

This is basically what was done in the above examples. There is no need to find an explicit solution for the integral. But this can be done if needed afterwords.