#### Answer

a) for all (x,y) except $y=x$ b) For all (x,y)

#### Work Step by Step

a) There can be zero on the denominator. Thus, for all $(x,y)$ except $y=x$
b) Since, the square of the denominator is not negative.so, the answer is : For all (x,y)

Chegg costs money, GradeSaver solutions are free!

Published by
Pearson

ISBN 10:
0-32187-896-5

ISBN 13:
978-0-32187-896-0

a) for all (x,y) except $y=x$ b) For all (x,y)

Someone from the community is currently working feverishly to complete this textbook answer. Don’t worry, it shouldn’t be long.