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**

-sqr(x) = y

I'm getting D[0,infinity) and R(-infinity, 0]

**handsonmath**- Replies: 6

y is a function of x

x = -y^2

A textbooks tells me the domain of x = -y^2 = (-infinity, 0] and the range is (-infinity, infinity)

But, its not clicking how they get this

I'm getting D[0,infinity) and R(-infinity, 0]

Very neat, thank you for the feedback. This is the first forum for math education i've been to.

**handsonmath**- Replies: 1

I've wondered about this question for some time now

**handsonmath**- Replies: 5

Hi everyone, this is my first post here. These Forums look awesome!! I've been on a Real Number kick lately, here is my latest invention http://handsonmath.blogspot.com/2011/02/real-number-universe-realverse.html

Pages: **1**