Math / Text Mode Icons may be crossed up

[tim crouse]

As I was attempting to create a multi-line equation:

\begin{eqnarray}
 y &=& x^4 + 4 \nonumber \\
   &=& (x^2+2)^2 -4x^2 \nonumber \\
   &\le&(x^2+2)^2
\end{eqnarray}

I had to select the Simple text icon to get it to display, all other icon selections generated errors

[Mihai Niculescu (q-quark)]

This is normal or the expected behaivour.

You could write this:

 y &=x^4 + 4 \nonumber \\
   &=(x^2+2)^2 -4x^2 \nonumber \\
   &\le(x^2+2)^2

And select the align environment.