PROBLEM: Given
FðsÞ ¼
ðs þ 2Þðs þ 4Þ
sðs þ 3Þðs þ 6Þ
find F(s) at the point s ¼ 7 þ j9 the following ways:
a. Directly substituting the point into F(s)
b. Calculating the result using vectors
ANSWER:
0:0339 j0:0899 ¼ 0:096— 110:7
The complete solution is at www.wiley.com/college/nise.