Expand the function into Fouriers series on an interval
In my book, the solution of this example starts with.
I know i 0 because f(x) is an even function. But where did they get the from? Is that the solution for ?
Expand the function into Fouriers series on an interval
In my book, the solution of this example starts with.
I know i 0 because f(x) is an even function. But where did they get the from? Is that the solution for ?