Answer
We need three axes to graph the function $z=f(x,y)$
Work Step by Step
We need three axes to graph the function $z=f(x,y)$, two axes for the independent variables $x,y$ and one axis for the dependent variable $z$. The dimension is three.
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
Published by
Pearson
ISBN 10:
0321947347
ISBN 13:
978-0-32194-734-5
Chapter 12 - Functions of Several Veriables - 12.2 Graphs and Level Curves - 12.2 Exercises - Page 882: 5
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