I need to determine the ranges of values of x and y for which the expressions on each side are defined please can I have help to start this off having a very bad day
3ln(y+4)=2ln(x+2)-2ln(x+9)+3ln(x2-1)
Use the following:
$\displaystyle \exists\;{\log u} \Leftrightarrow u>0$
Fernando Revilla
Edited: Sorry, I didn't see e^(i*pi)'s post
Do you mean something lihe this?
$\displaystyle \begin{tabular}{| c | c | c | c | }
\hline
{$y+4>0$} & {$x+2>0$} & {$x+9>0$} & {$x^2-1>0$} \\
\hline
{$y>-4 $}&{$\ldots$}&{$\ldots $}&{$\ldots $} \\
\hline
\end{tabular}
$
Fernando Revilla