Hello, my name is Calleigh and i am new to the forum! I am in Calculus II and have a few questions on some problems. I am using the textbook Calculus 8th edition by Larson, Hostetler and Edwards. Could someone please help me?(adsbygoogle = window.adsbygoogle || []).push({});

The problem is on pg 959 in chapter 13.8 in the text, number 56. It reads:

a. Find the absolute extrema of the function.

b. From the form of he function, determine whether a relative maximum of a relative minimum occurs at each point.

and it gives:

f(x,y)=2x-2xy+y^2

and R:The region in the xy-plane bounded by the graphs of y=x^2 and y=1

What does it mean when it states f(x,y)??? I've already heard of f(x). I don't know what it means when it has both x and y in the parenthesis. My professor gave these problems to us even though we haven't covered it yet, but he expects us to know how to do it?? Please help me, i'm so lost...

Any help would be greatly appreciated! Thanks guyssss ;)

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# Extrema of functions of Two Variables

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