When dealing with inequalities like this Attachment 25088, Attachment 25089 The problem states that I need to write the given set as an interval or a union of two intervals. Are the answers above both correct? Click image to enlarge please.

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- October 6th 2012, 08:18 PMEraser147What is the difference between... these two intervals
When dealing with inequalities like this Attachment 25088, Attachment 25089 The problem states that I need to write the given set as an interval or a union of two intervals. Are the answers above both correct? Click image to enlarge please.

- October 6th 2012, 09:08 PMSorobanRe: What is the difference between... these two intervals
Hello, Eraser147!

Quote:

When dealing with inequalities like this: .

The problem states that I need to write the given set as an interval or a union of two intervals.

Are both these answers correct?

. . . . . .

Obviously, both of them cannot be correct.

Here is helpful rule.

We have an inequality with an absolute value.

If the inequality is "less than",

. . then isand .*between*

This is written: .

If the inequality is "greater than",

. . then is "" of and .*outside*

This is written: .

- October 6th 2012, 09:28 PMEraser147Re: What is the difference between... these two intervals
Very helpful, thank you very much.