Use Laplace Transforms Y”(t) + 4y(t) = f(t) with y(0) = 1, y’(0) = 1, where f(t) = { 4t, 0 < t < 1 { 4, t > 1
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can you explain what you've tried so far please, anyway here's the first thing you can do, write f(t) as a function of unit step $\displaystyle f(t)=4t[u(t)-u(t-1)]+4u(t-1)$
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