Recent content by heaviside

That's it! I just went through it again, with the change you suggested, and with more care. And the solution came out. Thank you Ackbach!

Hi,The problem I am trying to solve is in a section on first order ODEs. It is problem 25 in section 2.1 of Boyce & DiPrima's Elementary Diff Eq (5th Ed). The problem serves as an introduction to the variation of parameters, but again, it is in the first section of the book that introduces first...