Question

3:
The solution the following IVP:y" + 4y = f(t),y(0) = 1, y'(0) = 0,
0,
f(t) = {1,
0,
0 <t <1
1<t < 2 ls
t> 2
(Ua(t) denotes the unit step function)​

Answer 1

0,0 <t <11<t < 2 ls

t(Ua(t) denotes the unit step function)