A particle of mass 1 moves under the influence of a conservative force such that its potential energy function V (x) = 0.25 x^4 -0.5 x^2 + 0.25

(a) Describe (qualitatively) the possible motions of the particle for all values of the total energy E.

comment: E = T + U = 0.5mv^2 + V(x) looking for v?

(b) Find and classify the equilibrium points of V (x).

comment: V(x) = 0?

(c) Find the angular frequency and period of small oscillations about the stable equilibria.

comment: how to find the frequency and period? depends on the function of sine or cos?

(d) Suppose that at t = 0 the particle is at Xo= sqrt(2) and its speed there is v = 0. Find the position of the particle for all t > 0 (i.e., find x(t)). What happens as t approaches to infinity?

comment: dx/dt = v(t) from question (a)?

(e) For the initial conditions of part (d), find the velocity of the particle for all t > 0. Prove that the speed of the particle v approaches to 0 as t approaches to infinity .

comment: v(t)? then |v(t)|?

I have some ideas, but still get confusion between each questions. It seems that there are so many variables and functions. Suggestions and help would be awesome. Thanks a lot with my appreciation.