If f(t) = cos(at), its Laplace transform is given b?

1.	If f(t) = cos(at), its Laplace transform is given b?
A.	s ‚Äö√Ñ√∂‚àö√ñ‚àö√´ s<sup>2</sup>+a<sup>2</sup>
B.	a ‚Äö√Ñ√∂‚àö√ñ‚àö√´ s<sup>2</sup>+a<sup>2</sup>
C.	‚Äö√Ñ√∂‚àö‚Ä†‚àö‚àÇ‚âà√¨‚àö√ë ‚Äö√Ñ√∂‚àö√ñ‚àö√´ 2‚Äö√Ñ√∂‚àö‚Ä†‚àö‚àÇs
D.	Does not exist
Answer» B. a ‚Äö√Ñ√∂‚àö√ñ‚àö√´ s<sup>2</sup>+a<sup>2</sup>

Discussion