1. The problem statement, all variables and given/known data Euler method : Plot the trajectory of a body moving under the influence of the suns gravity from initial conditions x=1, y=0, vx=0, vy=1. My trouble is figuring out my function. 2. Relevant equations d2r / dt2 = -r/r3 3. The attempt at a solution What I have been doing previously is breaking the function into x and y components, so for finding vx(i+1) I use Fx, as for vy and Fy. So for this case; Fx = -(x+0)/(SQRT(x2 + 0)3 Fy = -(0+y)/(SQRT(0 + y2)3 Is this right?