express in interval notation

[tek]

express in interval notation

a. the set of all real numbers that strictly greater than -8

can show me step by step here because i looked in my book and it is confusing to me.

 

[Deleted member 4993]

express in interval notation

a. the set of all real numbers that strictly greater than -8

can show me step by step here because i looked in my book and it is confusing to me.

I'll show you example of other problems.

a. the set of all real numbers that strictly less than -8

In this case, -8 is not included in the set. So the interval notation would be (-inf., -8)

b. the set of all real numbers that less than or equal to -8

In this case, -8 is included in the set. So the interval notation would be (-inf., -8] ...... notice the type of parenthesis changed.

 

[tek]

thank u!