阿摩線上測驗
3. For the potential energy function V(x) = -kx + λx³, what is the nature of the equilibrium point(s)?
(A) Stable
(B) Unstable
(C) Neutral
(D) No equilibrium
(E) Two stable and one unstable point
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統計： A(0), B(0), C(1), D(0), E(0) #3477285
統計： A(0), B(0), C(1), D(0), E(0) #3477285
