Answers

2014-06-14T17:52:02+08:00
Because x is a variable representing any value. if in elementary we put Blank in highschool we use variables representing unknown values. there are a lot of values between  1 and 3.

like 1.1, 1.11, 1.2, 1.3, 1.4, 2, 2.4, 2.5... and so on and so fort..
0