BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071
BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

Solutions

Chapter 2.1, Problem 60E
To determine

Find the domain of the function g(x)=x22x8

Expert Solution

Answer to Problem 60E

The domain of the function g(x)=x22x8 is (,2][4,)

Explanation of Solution

Given information: Consider the function g(x)=x22x8

Calculation:

Don’t take the square root of a negative number, so we must have g(x)0

  x22x80x24x+2x80(x+2)(x4)0x2orx4

Thus, the domain of the function g(x)=x22x8 is (,2][4,)

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