【多选题】设x(t),y(t)为复值函数,则 A: | x(t)+y(t) |= | x(t)|+|y(t) | B: | x(t)-y(t) |= | x(t)|-|y(t) | C: | x(t)y(t) |= | x(t)||y(t) | D: | x(t)/y(t) |= | x(t)|/|y(t) | 选题 函数 发布时间:2024-04-19 14:35:06