Can't get ^ (power) to work properly...

StephanJohn · Newbie Joined: 21 Feb 2005 Posts: 2 Location: Germany

Hi,

I tried the following formula in a presentation:

I_MCD = { { %sigma^+ - %sigma^- } over { %sigma^+ + %sigma^- } }

The output is OK, as long as I don't include the powers (^), then it gets all messy (a lot of question marks, the fraction is above the I_MCD...). I tried all kinds of bracketing ( {%sigma}^{+}, {%sigma^+}, etc.) but nothing seems to be correct. What am I doing wrong?

Any help appreciated!
Stephan.

RGB · Posted: Mon Feb 21, 2005 3:35 am Post subject:

The plus symbol is a binary operator, so it waits an input before and after him. The solution is to use the quotation marks:
I_MCD = { { %sigma^"+" - %sigma^"-" } over { %sigma^"+" + %sigma^"-" } }

richardf · OOo Enthusiast Joined: 10 Oct 2004 Posts: 107

After the - there is an expectation of a number of text. You can put a space behind it using " ":

I_MCD = { { %sigma^+ - %sigma^-" " } over { %sigma^+ + %sigma^-" " } }

Richard

RGB · Posted: Mon Feb 21, 2005 3:52 am Post subject:

The space is not a good solution, because "spread" your equation with a bad visual effect.
I correct myself: Instead to the cuotation marks, maybe is better to use the %:
I_MCD = { { %sigma^{%+%} - %sigma^{%-%} } over { %sigma^{%+%} + %sigma^{%-%} } }
In this case, the minus sign appears with the right size.

StephanJohn · Newbie Joined: 21 Feb 2005 Posts: 2 Location: Germany

Ah!!
Great! Thanks a lot!
Stephan.