3. Functions of Several Variables
Introductory Examples — Quiz
Test your understanding of introductory examples with 5 practice questions.
Practice Questions
Question 1
Which expression is a function of two variables?
Question 2
If $f(x,y)=2x-3y$, what is $f(4,-1)$?
Question 3
What is the domain of $g(x,y)=\sqrt{9-x^2-y^2}$?
Question 4
For the function $f(x,y)=x^2+y^2$, which equation describes the level curve for the level $4$?
Question 5
What is the graph of $z=x+y$ in three dimensions?