- #1
e_brock123
- 14
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Homework Statement
Hi I just have a problem in regards to setting up your partial fractions when doing nonhomogeneous differential equations using Laplace transforms.
I’m at the stage of getting the inverse Laplace of: (1-625S^4)/(S^3 (25S^2+1) )
Homework Equations
The Attempt at a Solution
So I’m going to simplify that equation by using partial fractions and I get:
A/S+B/S^2 +C/S^3 +(DS+E)/(25S^2+1)
I roughly understand repeated linear factors but however I’m having trouble grasping why there is an S attached to the D. If you could explain to me why this occurred that would be very helpful thanks in advance.