1. The problem statement, all variables and given/known data My question wants me to give the Order of the DE, Degree of the DE, and Non-Linear terms in the DE 2. Relevant equations [d^2/dx^2 y(x)]^6 + d^4/dx^4 y(x) + [d^5/dx5 y(x)][d/dx y(x)] + x^4[d^3/dx^3 y(x)] = 3cos(2y(x)) + x^2 - 1 3. The attempt at a solution I know the Order is 5, I know the Non-Linear are the values in brackets, but my teacher has the answer for the Degree = 1 Why is this? I thought it would be 6, as the degree of a DE is the highest derivative term. Or is it because there are more terms with the power of 1?