can anyone assist with evaluating the integral if sin (x/y) with respect to x & y, i have tried using integration by parts but cant seem to get an answer.
i know by using the online calculators the answer is -ycos(x/y)
would some be able to post some of the initial steps i get you have to use the substitution method but am having difficultiy getting the answer out
original expression integrate with respect to x
step 2 using substitution = sin (t) dt
step 3 -cos (t) t ???