Convolution solutions (Sect. 4.5).
users.math.msu.edu › users › gnagyLaplace Transform of a convolution. Theorem (Laplace Transform) If f , g have well-defined Laplace Transforms L[f ], L[g], then L[f ∗ g] = L[f ] L[g]. Proof: The key step is to interchange two integrals. We start we the product of the Laplace transforms, L[f ] L[g] = hZ ∞ 0 e−stf (t) dt ihZ ∞ 0 e−s˜tg(˜t) d˜t i, L[f ] L[g] = Z ∞ ...
Laplace Transforms and Convolutions
www.math.usm.edu › schroeder › slidesThe Inverse Laplace Transform of a Product 1. Solving initial value problems ay00 +by0 +cy=f with Laplace transforms leads to a transform Y =F·R(s)+···. 2. If the Laplace transform F of f is not easily computed or if the inverse transform of the product is hard, it would be nice to have a direct formula for the inverse transform of a product.