Find the inverse transforms of the following functions: (a) F1s ss 10s 20 s

Find the inverse transforms of the following functions:

(a) F1ðsÞ ¼ sðs þ 10Þðs þ 20Þ

ðs þ 5Þðs þ 30Þðs þ 50Þ

(b) F2ðsÞ ¼

ðs þ 1000Þðs þ 5000Þ

ðs þ 2000Þ