944 Use the Laplace transformation to find the vt that satisfies the following first-order differential equations: dv(t)

9–44 Use the Laplace transformation to find the vðtÞ that satisfies the following first-order differential equations:

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dv(t) (a) 250- +2500v(t)=0, v(0-)=100 V dt dv(t) (b) +300v(t)=300 u(t), v(0-)=-150 V dt