1. The problem statement, all variables and given/known data A particle is moving along the x-axis subject to the potential energy function U(x) = 1/x + x2 + x - 1. Determine the x-component of the net force on the particle at the coordinate x= 3.29m. 2. Relevant equations U(x) = integral(F(x)dx) 3. The attempt at a solution To find the net force I took one derivative of the potential energy equation. The resulting (-1/x2) + 2x +1. I then plugged in 3.29 for x and it resulted in 7.487. Which is not the correct answer. Now my though is that if i take the second derivative of the potential energy function and then plug in my value of x=3.29 m, then that would be correct. But I am really not sure.