This is a picture of the original problem statement. There wasn't a circuit diagram with it. It is possible that the given solution is wrong - I know other people are having trouble with this problem.
Yes, my last two equations for v(t) should not have A1 and A2 in them. Sorry for the typo.
I double checked that I copied everything over correctly and I can't find an obvious error.
Homework Statement
L = 20mH = 20 x 10-3 H
i = 40 mA for t≤0
i = A1e-10,000t + A2e-40,000t A for t≥0
The voltage at t=0 is 28 V.
I have to find the equation for the voltage for t>0.
Then I have to find the time when power is zero.
Homework Equations
v(t) = L* di/dt
p(t) = L*i* di/dt
The...