Let a given periodic signal satisfys(n1, n2) = s(n1 + 5, n2 + 3) = s(n1 – 1, n2 – 3) for all n1, n2. (a)What is the corresponding periodicity matrix N? (b)Is 푠푠also periodic with vectors풏풏1=�40� and 풏풏2=�3−3� ?

Which of the following phrases is an example of positive language from this speech? a.“battered by storms” b.“deeply rooted in the american dream” c.“wallow in the valley of despair” d.“veterans of creative suffering”