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## #1 Re: Help Me ! » Algebra Problem: Seeking The Why » 2011-04-02 04:05:36

-sqr(x) = y

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

## #2 Help Me ! » Algebra Problem: Seeking The Why » 2011-04-02 02:13:57

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]

## #3 Re: This is Cool » The Real Number Universe (The Realverse?) » 2011-03-05 01:13:09

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

## #4 Re: This is Cool » The Real Number Universe (The Realverse?) » 2011-03-05 00:56:04

Thanks bobbym, is this an active forum in terms of discusson or is the majority of the activity in the "how do you solve this" section?

handsonmath
Replies: 1