Solving Some Types of Non-Linear Ordinary Differential Equations by Using a New Assumption

In this paper ,we solved some sets of non-linear ordinary differential equations by using a new procedure .This is done through finding the function z(x) and using the assumption y= e z(x) dx which gives the general solution for the non-linear differential equation required to be solved . We have applied this method on some sets of non-linear differential equations of first order and 2nd, 3nd and fourth degree - second order and 1nd and 2 degree and also the third order and first degree whether one of the variable is missing or not