LimitsHard
Question
cos
when n is an integer -Options
A.is equal to 1
B.is equal to -1
C.is equal to zero
D.does not exist
Solution
cos 
= 
cos 
=
cos π 
=
cos 
= - sin nπ = 0Create a free account to view solution
View Solution Freecos when n is an integer -cos = cos =
cos π =
cos = - sin nπ = 0