[待解决] 问题296: Consider A,B∈Rn×n . Suppose that A and B are similar. Show that there is an invertible matrix S such that Null(B)={x∈Rn∣∃y∈ Null(A),x=S−1y} 待解决 · 昨天 19:56 · 阅读 17
[已解决] 问题294: Assume everything converges. (i) (2 pts) For n∈N , show that if f(x)=f(1/x) , 高等数学 · 已解决 · 昨天 11:51 · 阅读 18
[已解决] 问题281: Azman is 15 years older than Bryan. In another six years, Chandran will be four times the age of Bryan. 已解决 · 初中数学 · 4月10日 · 阅读 87