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by nimish
2185 days ago
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If A and B are a solution, then A+B is also a solution. For a constant r, if C is a solution, r*C is also solution. That's it. The nice closed form of exponentials as solutions is just for linear difference equations with constant coefficients. In that case, you can always find a solution by trying λ^n and seeing what that forces λ to be -- it'll be a root of some polynomial. |
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