The (L^{-1} left ( frac{3s+8}{s^2+4s+25} right ) ) is (e^{-st} (3cos ( sqrt{21}t+ frac{2sin ( sqrt{21}t)}{ sqrt{21}}) ). What is the value of s?

The (L^{-1} left ( frac{3s+8}{s^2+4s+25} right ) ) is (e^{-st} (3co

1.	The (L^{-1} left ( frac{3s+8}{s^2+4s+25} right ) ) is (e^{-st} (3cos ( sqrt{21}t+ frac{2sin ( sqrt{21}t)}{ sqrt{21}}) ). What is the value of s?
A.	0
B.	1
C.	2
D.	3
Answer» D. 3

The (L^{-1} left ( frac{3s+8}{s^2+4s+25} right ) ) is (e^{-st} (3cos ( sqrt{21}t+ frac{2sin ( sqrt{21}t)}{ sqrt{21}}) ). What is the value of s?
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