Diff Eq- Convolutions and state-free solution

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SUMMARY

The discussion focuses on finding the state-free solution for the differential equation yii + 4yi + 29y = 0, with the non-homogeneous part defined as f(t) = y2 + 4y + 29. The impulse response is identified as e(t) = (1/5)e^(-2t)sin(5t). The state-free solution is derived through the convolution of e(t) and f(t), which requires integrating the product of e(t-u) and f(u). The participant expresses confusion regarding the integration process and the definition of f(t).

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giacomh
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Homework Statement



Find the state-free solution

yii+4yi+29y=0
y2+4y+29=f(t)

Homework Equations



I know I have to find the impulse-response, e(t), which is 1/5e^-2t sin(5t).

The Attempt at a Solution



The state-free solutions is the convolution of e and f(t). This is the part I'm confused about, because there is only one example given in my book. Do I integrate the product of e(t-u) and f(u)?
1/5e-2t sin(5t)*y2 +4y2 +29y
 
Last edited:
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What's f(t)? It seems to appear out of nowhere.
 
sorry, f(t) is y2+4y+29
 

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