Exercise 1.3 (b)

[MaciekLeks]

If my thinking is correct:



,shouldn't we have the inequality of type less than or equal to than less than only (otherwise we lose x(t)=null vector)?

Thank you in advance.

[yaser]

By convention, the vector includes the zeroth coordinate which is fixed at , hence the norm of cannot be zero.

[MaciekLeks]

Originally Posted by yaser

By convention, the vector includes the zeroth coordinate which is fixed at , hence the norm of cannot be zero.

Of course
Thank you Professor.