Xer in Math | Student Matrix
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# Currently reading: Xer in Math

#### Bucky

##### Active member
What does XER mean in maths? and are all positive and negative numbers ?

All replies will be appreciated.

#### medstudent

##### Member
x∈R means x is an element of R where x belongs to a real set of numbers and R means "the Real set of numbers"

• Bucky

#### Zain

##### Member
Xer or in maths means that is a real number belonging to a Real set of numbers (R). The real numbers basically consists of all numbers both positive and negative. Integers, zero, rational numbers and a range of other numbers can also be included. So basically, X ∈ R means is an element of R.

• Bucky

##### Member
the “e” looking symbol means “in”. the statement in your title means “x in R”. that’s literally it.

The xer statement precisely means x in R. x is an element in R

• Bucky

#### Canucksfan

##### Member
All of the replies are true.

I just simplify it as “ x exists in R “, R being the Real set of numbers.

• Bucky

#### Bucky

##### Active member
Thanks guys!! Create an account or login to comment