Rasandemusen
自2019年以来活跃
内容提要
问题
为什么我的fimplicit情节空?
信谊x (t)数值= diff (x, t, 2) + (4.2 / (t + 3) / 2) * x = = 0;Dx = diff (x);DDx = diff (Dx);cond1 = x (0) = = 0;cond2 = Dx……
3年前| 1 | 0回答
为什么我的fimplicit情节空?
信谊x (t)数值= diff (x, t, 2) + (4.2 / (t + 3) / 2) * x = = 0;Dx = diff (x);DDx = diff (Dx);cond1 = x (0) = = 0;cond2 = Dx……
