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Ke

^{-[tex]\sigma[/tex]t}sin([tex]\omega[/tex]t - [tex]\varphi[/tex])

From the graph, determine K, [tex]\sigma[/tex], [tex]\omega[/tex], and [tex]\varphi[/tex]

i know f = 1/t

t = .004 s

f = 250 Hz

[tex]\omega[/tex] = 2[tex]\pi[/tex]f

[tex]\omega[/tex] = 1570

[tex]\varphi[/tex] is clearly 0

How do i determine K and [tex]\sigma[/tex]??