9<x<14 write an interval notion?

To write the given inequality, 9 < x < 14, in interval notation, you can use square brackets [ ] or parentheses ( ) to represent whether the endpoints are included or excluded.

Using square brackets [ ], the interval notation for the inequality 9 < x < 14 would be:

[x ∈ [9, 14]]

This notation indicates that x is a member of the interval [9, 14], which includes both 9 and 14.

Alternatively, if you want to express that the endpoints are excluded, you can use parentheses ( ) in the interval notation:

(x ∈ (9, 14))

Here, the interval (9, 14) signifies that x belongs to the open interval between 9 and 14, excluding both 9 and 14.

So, based on the given inequality, you can use either of the following interval notations:

- [x ∈ [9, 14]] (inclusive endpoints)
- (x ∈ (9, 14)) (exclusive endpoints)