Refer to the first few lines of
Newton's method in optimization - Wikipedia, the free encyclopedia
giving Taylor expansion approximation
F(x+DeltaX)=.........+ 1/2 * F2(X) * DeltaX^2
comes out
F1(X)+F2(X) * DeltaX = 0
Why missing the coefficient 1/2 ? is it a mistake?
thanks.