设m,n∈Z ,证明:当x→0时,(1)o(xm) o(xn)=o(xl),l=min{m,n};(2)o(xm)×o(xn)=o(xm n);(3)若α是x→0时的无穷小,则αxm=o(xm);(4)o(kxn)=o(xn(k≠0).
设m,n∈Z ,证明:当x→0时,(1)o(xm) o(xn)=o(xl),l=min{m,n};(2)o(xm)×o(xn)=o(xm n);(3)若α是x→0时的无穷小,则αxm=o(xm);(4)o(kxn)=o(xn(k≠0).
发布时间：2025-05-19 11:52:48
