1. The problem statement, all variables and given/known data X is the space of ordered n-tuples of real numbers and ||x||=max|[tex]\xi[/tex]j| where x=([tex]\xi[/tex]1,...,[tex]\xi[/tex]n). What is the corresponding norm on the dual space X'? 2. Relevant equations 3. The attempt at a solution I think the answer is that ||x*||=|x_1|+...+|x_n| , but I'm not sure if that's correct or how to show it. Any ideas? Thanks so much.