Answer
$R^2$.
Work Step by Step
Since $$f(x,y)=2xy-3x+4y$$ is a polynomial, then it is defined for all $x,y$. Hence the domain of $f$ is $R^2$.
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: 11
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