As I study the first part of abstract algebra, I have a question: why |R|=|R2|?
And moreover, I knew the fact that |R|=|Rn|.
Does the equality apply to any infinite set?
How can I prove them?
How to find limh→0sin(ha)h without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
No comments:
Post a Comment