Please see attached
Thanks
Chester
Your method is correct, but your denominator is slightly incorrect.
$\displaystyle \frac{ \frac{1}{3} + \frac{1}{y} }{ \frac{y}{3} - \frac{3}{y} }$ $\displaystyle \times \frac{3y}{3y}$
$\displaystyle = \frac{ \frac{1}{3}(3y)+ \frac{1}{y}(3y) }{ \frac{y}{3}(3y) - \frac{3}{y}(3y) }$
$\displaystyle = \frac{ y+ 3 }{ y^2 - 9 }$
$\displaystyle = \frac{y+3}{(y+3)(y-3)} = \frac{1}{y-3}$, $\displaystyle y \neq 3, \, -3, \, 0$
-Dan
(Sigh) I can't find the link. Somewhere in here is a quick set of instructions. Briefly, if you want to see how the text is coded, left-click on the expression and a box will come up.Originally Posted by Chester
The basics are that all code for LaTeX on this forum is in between the two sets of boxes " [ math ] " and " [ /math ] ." (Without the spaces and quotes!) A decent reference for basic forms can be found here: http://meta.wikimedia.org/wiki/Help:Formula
So far, everything I've found on this page works in this forum.
Common examples:
$\displaystyle x^2$
$\displaystyle x_1$
$\displaystyle x_1^3$
$\displaystyle \sqrt{ x^{3/2} }$
$\displaystyle \frac{x-1}{x^2+2x}$
You get used to it after a while.
-Dan
They really should post the LaTex Tutorial as a sticky in one of the forums.Originally Posted by topsquark