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Chapter 1: Problem 118

Explain why \(|x|<-4\) has no solution.

Short Answer

Expert verified
The inequality \(|x|<-4\) has no solution because the absolute value of any real number is always nonnegative i.e., \(|x| \geq 0\). Thus, \(|x|\) can never be less than 0 let alone -4.

Step by step solution

01

Understand the Absolute Value Function

The absolute value function, denoted as \(|x|\), gives the distance of \(x\) from zero on the real number line. It is defined as \( |x| = x \) for \( x \geq 0 \), and \( |x| = -x \) for \( x < 0 \). In both cases, the result is a nonnegative number, thus, \( |x| \geq 0 \). This means the absolute value of any number cannot be negative.
02

Apply the Absolute Value Function

The inequality \(|x|<-4\) is asking for all the values of \(x\) that, when the absolute function is applied, result in a value that is less than -4. Due to the properties of the absolute value function, this set is empty since \(|x|\) cannot be negative.
03

Conclude the Solution

Considering the properties of the absolute value function \( |x| \geq 0 \), it's impossible for \( |x| \) to be less than -4, or any negative value for that matter. Thus, the inequality \(|x|<-4\) has no solution. This is because it contradicts the basic definition and properties of the absolute value.

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Most popular questions from this chapter

Solve each rational inequality in Exercises \(29-48,\) and graph the solution set on a real number line. Express each solution set in interval notation. $$ \frac{4-2 x}{3 x+4} \leq 0 $$

In Exercises \(9-20,\) find each product and write the result in standard form. $$(7-5 i)(-2-3 i)$$

In Exercises \(1-8,\) add or subtract as indicated and write the result in standard form. $$(-2+6 i)+(4-i)$$

In Exercises \(1-8,\) add or subtract as indicated and write the result in standard form. $$6-(-5+4 i)-(-13-11 i)$$

In Exercises \(1-8,\) add or subtract as indicated and write the result in standard form. $$7-(-9+2 i)-(-17-6 i)$$
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