# Thread: How do you prononce R^2?

1. ## How do you prononce R^2?

Hi,
How do you prononce $\displaystyle \mathbb{R}^2$,$\displaystyle \mathbb{R}^3$ and $\displaystyle \mathbb{R}^n$, in English?

2. Originally Posted by arbolis
Hi,
How do you prononce $\displaystyle \mathbb{R}^2$,$\displaystyle \mathbb{R}^3$ and $\displaystyle \mathbb{R}^n$, in English?
This is how I pronounce them...

$\displaystyle \mathbb{R}^2$ : "R" two
$\displaystyle \mathbb{R}^3$ : "R" three
$\displaystyle \mathbb{R}^n$ : "R" "n"

3. I called it as:

$\displaystyle \mathbb{R}^1$ = "$\displaystyle \mathbb{R}$to the power of one"
$\displaystyle \mathbb{R}^2$ = "$\displaystyle \mathbb{R}$to the power of two"
$\displaystyle \mathbb{R}^3$ = "$\displaystyle \mathbb{R}$to the power of three"
$\displaystyle \mathbb{R}^n$ = "$\displaystyle \mathbb{R}$to the power of $\displaystyle n$"

And so on.

4. Originally Posted by Chris L T521
This is how I pronounce them...

$\displaystyle \mathbb{R}^2$ : "R" two
$\displaystyle \mathbb{R}^3$ : "R" three
$\displaystyle \mathbb{R}^n$ : "R" "n"
Like in French

5. There are a few "special" ones in English.

R^2 = "R squared" or "R to the second"
R^3 = "R cubed" or "R to the third"

Two and three are the only ones that I know of that have a "special" word like squared and cubed. Anything else is like this:

R^4 = "R to the fourth"
R^5 = "R to the fifth"

I speak U.S. English, for whatever that's worth. The Brits and Aussies and all of those guys probably use something different :-D