Advanced Math/laplace

Advertisement


Question
do you know anyhting about the laplace transform

Answer
Hi, Bob,

Not so much, I'm afraid.  It has been a long time and I don't have the original books with me here.  All I can recall is:

1. It is an integral, where, given some function f(t), you produce a new function, F(s) by:

F(s) =

{inf
|    f(t) exp(-st) dt
}0

2. It is used to solve certain classes of differential equations in which you form the transform of the equation, do some algebra to solve, (could be a lot) then perform the inverse transform.  A lot of the time, you simply look up the transform (or inverse) in a standard table.  

Advanced Math

All Answers


Answers by Expert:


Ask Experts

Volunteer


Paul Klarreich

Expertise

I can answer questions in basic to advanced algebra (theory of equations, complex numbers), precalculus (functions, graphs, exponential, logarithmic, and trigonometric functions and identities), basic probability, and finite mathematics, including mathematical induction. I can also try (but not guarantee) to answer questions on Abstract Algebra -- groups, rings, etc. and Analysis -- sequences, limits, continuity. I won't understand specialized engineering or business jargon.

Experience

I taught at a two-year college for 25 years, including all subjects from algebra to third-semester calculus.

Education/Credentials
-----------

©2012 About.com, a part of The New York Times Company. All rights reserved.