2nd Order differential equation, numerical method 1. The problem statement, all variables and given/known data I've attached the question. 2. Relevant equations 3. The attempt at a solution u=y and v=y′ let y'=dy/dt = du/dt = v dv/dt = u'' therefore, dv/dt + 7(v)^2 +3x^2 *y^3 = 2 dv/dt = 2 - (7(v)^2) - (3x^2)*(u^3) and dx/dt = 1, where x(t0)=0 and u(t0)=4, v(t0)=8 the only part im not sure is the part i've bolded. i think x(t0)=0 however in all the other options it has x(t0)=1 so im pretty much only left with the "none of these" option.