then the LaTeX syntax should be:
[TEXT]\Huge {\int_{0}^{1} \int_{\gamma}^{\Gamma} \int_{\sigma}^{\delta} F(x)G(y)H(z)dz dy dx=\frac{1}{g(x)}}[/TEXT].
But please, replace both "TEXT" above by 'tex'.
If you want to display the equation using MathJax instead, replace 'tex' by 'mjax', to have an equation which looks like:
\Huge \int_{0}^{1} \int_{\gamma}^{\Gamma} \int_{\sigma}^{\delta} F(x)G(y)H(z)dz dy dx=\frac{1}{g(x)}.
You can as well typeset fancy equations like:
If you are interested, here is the
[TEXT]\200dpi \text{\color{blue} Solve} \ {\color {red}i \hbar \frac{\partial \Psi(x,t)}{\partial t}} {\color {cyan} = }{\color {green}\left[ -\frac{\hbar^2}{2m} \frac{\partial^2}{\partial x^2}+V(x) \right] } {\color {magenta}\Psi(x,t)}[/TEXT].
Again, remember to replace 'TEXT' by 'tex'!
Enjoy!