Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Al-Allo****Member**- Registered: 2012-08-23
- Posts: 318

If I had the following :

and I have put it in comprension notation :

{x∈R|12<equal x <equal15 and 15<equal x <equal 30 }

Is the comprehension notation good ?

*'and' means intersection in this case

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,009

Yes, that looks good to me.

Are you expected to simplify as well?

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

**Al-Allo****Member**- Registered: 2012-08-23
- Posts: 318

What do you mean ??? How can it be more simplified ?

Offline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,009

If x must lie in the region 12 to 15 AND in the region 15 to 30, then x must be ????

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

**Al-Allo****Member**- Registered: 2012-08-23
- Posts: 318

Well the intersection is 15, if that's what you're asking

Offline

Pages: **1**