Math Help - problem in math typing

1. problem in math typing

I am facing problems in math typing
I have tried $$to wrap the latex code, but no one working. What is the problem? 2. Re: problem in math typing$$\large e^{\displaystyle{\imath \pi}}+1=0

works here

I've taken to using just a single dollar sign because it lets you quickly flip between LaTex and text.

This is an example of a line with inline math $x+2=3$ and some more text $moremath^2$ and final text.