A Laplace transform takes a function of a time and transforms it into a function of , which is the laplace frequency variable. This is simply a complex number. Hence, we take a problem in the time domain into the frequency domain!
The way we transfer a function of time, into a function of the laplace frequency is using the Laplace transform integral, which is as follows:
For example, the function is transformed as such:
A use for these transforms is to make differential equations much easier to solve!
If you add me to MSN I can send you some introductory notes from my university course. Mushet@hotmail.co.uk