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如何解高阶时变微分方程？关于ode45的用法~。
你这里没有必要引入 x3，只要 x1、x2就够了。也就是原1元2阶微分方程转化为了2元1阶微分方程组： x1'=x2 x2'=-c(t)x2-kx1+f(t) 对这个微分方程组直接用ode求解，但你需要的只是x1的解（因为 x1 就是 y）。...
3 years ago | 0
| accepted
