Thread: Finding a function by use of integrals (low level math)

Hey guys,
I've run into some homework that's bothering me. I've been asked the question:



I know that I can use:



To find the area between the two graphs in the interval [a;b], but how do I get the function from there?
If anyone could show me the first step, I might be able to work out the rest!

Thanks in advance!

Surely the two graphs have just been moved up by a constant amount...

I have a feeling there's information you haven't told us...