Question

Write the following intervals in set-builder form :
(i) `(-3,0)`
(ii) `[6,12]`
(iii) `(6,12]`
(iv) `[-23,5)`.

Answer 1

(i) `(-3,0)={x:x in R,-3ltx lt0}`
(ii) `[6,12]={x:x in R,6 lex le12}`
(iii) `(6,12] = {x:x in R,6 lt x le 12}`
(iv) `[-23,5)={x:x in R,-23 le x lt 5}`.