   Chapter 14, Problem 1RE Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042

Solutions

Chapter
Section Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042
Textbook Problem

What is the domain of z = 3 x + 2 y x 2 + y 2 ?

To determine

To calculate: The domain of the function z=32xy.

Solution:

The domain of the function z=32xy is.

Explanation

Given Information:

The provided function is z=32xy.

Formula used:

The domain of a function of two variables f(x,y) is the set of all ordered pairs (x,y) for which the function is well-defined.

If the function maps each element of the domain to an element in the codomain, then it is said to be well defined.

To find the domain of a rational function, set the denominator of the function equals to zero. Then the domain of the function is the set of all ordered pairs except the values for which the denominator is zero.

Calculation:

Consider the provided function, z=32xy.

Rewrite z as f(x,y) in z=32xy.

Thus,

f(x,y)=32xy

The function f(x,y) is a rational function.

Recall that, to find the domain of a rational function, set the denominator of the function equals to zero. Then the domain of the function is the set of all ordered pairs except the values for which the denominator is zero.

The denominator of the function f(x,y)=32xy is 2xy.

Thus, the denominator 2xy=0 and solve.

2xy=0y=2x

Therefore, the domain of the function f(x,y)=32xy is the set of all ordered pairs (x,y),

where x and y are real and y2x.

Hence, the domain of the function z=32xy is.

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