how do you actually type non ascii like exponents, subscripts, radicals, greek letter theta and exponents?

You can use HTML character entities:

θ = ampersand theta semicolon

x² = x ampersand sup2 semicolon

√ = ampersand radic ;

There's many more. Check this page:

http://www.tntluoma.com/sidebars/codes/

Maybe you should have asked this in Computers.

If you are using Windows, you can use the Character Map (to access the Character Map, go to Start --> Run... --->[type in "charmap" w/out the quotes] and click OK). There are hundreds of characters you can use. There's a search box on the bottom when using the Advanced View where you can search by character name. If I ask for Theta, I will get these:

Θ θ ϑ ϴ ᶿ <--(is that the exponent theta you want?). (If you can't see the symbols right here using Internet Explorer 6+, it's okay).

If you are writing stuff in Microsoft Word, to make a character a superscript, use [CTRL] + [SHIFT] + [+ (Plus Key)]. To return to normal, or go from normal to subscript, use the same key combination, except use the hyphen/underscore key at the end, instead of PLUS.

Here's radical if you search "root": √

use x^5 In certain expressions x5 might be taken as 5x or times 5 Clarity is important in mathematics If you weren't able to type^ then you would have to explain in writing along with your problem that numbers following an x were exponents.

Try Microsoft Equation editor. Its in word. In Office 2007, you just go to insert: and choose equation.

In Microsoft Excel you use "^" for exponentiation.

You can simply say XSUB1 for subscripts.

Some computers can some can't so you need to download a program! :)

Not all of them appear as you might like. Sometimes it's just up to what the browser you are using can display.

ψ Ωθχ π