The polynomial function f is defined by f(x)x^4-3x^3-2x^2+4x+5.
Use a graphing calculator to find all the points (x,f(x)) where there is a local maximum.
Round to the nearest hundredth
MathMate answered the same question here ...
http://www.jiskha.com/display.cgi?id=1295948548
Keep in mind that tutors do not necessarily have the same graphing calculator as you do, so it is hard to answer that part of the question.
You will have to know how to do that on YOUR calculator.