The Laplace Transform is a method to solve some differential equations. Given that
Where
Taking the Laplace of a function turns differentiation and integration operations into multiplication and division and therefor greatly simplifying operations. The following in addition to a Laplace Transform Table can be used to transform a function to and from its Laplace.
See W4L1 - Intro to Laplace Transforms and W4L2 - Calculating the Laplace Transform for examples and more information.
Undoing a Laplace Transform is called finding the Inverse Laplace Transform,
It is common to write a function as uppercase after undergoing the Laplace Transform: