1. The problem statement, all variables and given/known data Solve the following equation for x(y). (use no differential functions) x(0)' and x(0) are known. 2. Relevant equations 3. The attempt at a solution I'm a bit unsure as to what to do next but I can easily make a messy formula up to approximate the result. k1 and k2 are a constant value. The bigger E is, the bigger the error. For an infinite recursive use of this formula with an infinitesimal E the right result would be achieved. I don't know what it converges to though. Any help for this problem or/and similar problems would be great. Thank you.