The error function E(ω) should exhibit at least how many extremal frequencies in S?
A. L
B. L-1
C. L+1
D. L+2
Answer:A
The error function E(ω) should exhibit at least how many extremal frequencies in S?
A. L B. L-1 C. L+1 D. L+2
Explanation: According to Alternation theorem, a necessary and sufficient condition for Pω) to be unique, best weighted chebyshev approximation, is that the error function E(ω) must exhibit at least L+2 extremal frequencies in S.