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The value of the c1 in the following equation is?

Posted: Thu Jul 14, 2022 10:59 am
by answerhappygod
i = e-37.5t(c1cos1290t + c2sin1290t) + 0.7cos(500t + π/4 + 88.5⁰).
a) -0.5
b) 0.5
c) 0.6
d) -0.6