Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN: 9781305658004
Author: Ron Larson
Publisher: Cengage Learning
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Textbook Question
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Chapter 1.CR, Problem 1CR

Linear Equations In Exercises 1-6, determine whether the equation is linear in the variables x and y .

2 x y 2 = 4

Expert Solution & Answer
Check Mark
To determine

Whether the equation 2xy2=4 is linear in the variables x and y or not.

Answer to Problem 1CR

Solution:

The equation 2xy2=4 is not linear in y.

Explanation of Solution

Given:

The provided equation is 2xy2=4.

Definition used:

Linear Equation in n variables:

A linear equation in n variables x1,x2,x3,...,xn has the form a1x1+a2x2+a3x3+...+anxn=b. The coefficients a1,a2,a3,...,an are real numbers, and the constant term b is a real number. The number a1 is the leading coefficient, and x1 is the leading variable.

Calculation:

Consider 2xy2=4.

We know that the linear equation is of the form a1x1+a2x2+a3x3+...+anxn=b where a1,a2,a3,...,an are coefficients and b is the constant.

The given equation is 2xy2=4.

Here we see that the power of y is 2.

Thus the given equation is not linear in y.

Final statement:

Therefore the equation 2xy2=4 is not linear in y.

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Chapter 1 Solutions

Elementary Linear Algebra (MindTap Course List)

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