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Table of Basic Laplace Transforms. Example: ramp function t.

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Presentation on theme: "Table of Basic Laplace Transforms. Example: ramp function t."— Presentation transcript:

1 Table of Basic Laplace Transforms

2 Example: ramp function t

3 DOC and poles. DOC of the (one-sided) Laplace transform: to the right of the right-most pole (the one with greatest real part).

4 Properties of the Laplace Transform Example:

5 Another example:

6 Properties of the Laplace Transform (cont.) Postpone proofs, do examples.

7 Examples. 2)

8 Examples.

9 6) Delay property. No confusion if u(t) term is included in the original transform.

10 Initial and Final Value Theorems Relates limiting values of a function and its transform. Can be used to get time-domain information from the Laplace transform. Opposite limits in t and in s. Here we take s to be real-valued. SOME RESTRICTIONS APPLY! Precise statements given below, and proofs later. REMARKS:

11 Initial Value Theorem: Precise Statement Examples:

12 Final Value Theorem: Precise Statement Examples:

13 Inverse Laplace Transform

14 First, the strictly proper case

15

16

17 General case, simple roots. Brute force method gives n equations, n unknowns.


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