Algebra Problem?

Question

Use a graphing utility to graph the function over the indicated interval and approximate any local maxima and local minima.

f(x) = 2+8x-x^2
(-5,5)
Where does the (-5,5) come into play?

Answer 1

[-5,5] is the interval over which you need to create the graph. Create the graph starting from x = -5 all the way to x = 5.

http://img98.imageshack.us/img98/3070/graphbe5.jpg