The thing in the box is the result of the Taylor series : Taylor series - Wikipedia, the free encyclopedia
It is said that the sum begins at m=1, but here it doesn't matter as f(0)=0
Let denote the n-th derivative of at . if , then
I can get the answer using the old fashion way, but when I lookeed at the solution using power series, I don't understand one of the steps. heres the soultion my prof has:
I understand every step except the step to the result in the box. How are they equal?