Square function of what?
Flux a ramp function of what?
What is the definition of B, anyway?
I suspect, if you took a little more time to prepare your questions, you will find your answer in the process!
It is a very useful technique. I've answered many of my own questions this way. All too often, answering them myself after hitting "Post" and only then thinking about what was missing... but my rate seems to be improving over time.
Tim