You can render blocks of maths by wrapping with $$
so
$$
\hat{H}\Psi=E\Psi
$$
will render as
\hat{H}\Psi=E\Psi
You can also do it inline with a single $ so that $E=mc^2$
becomes E=mc^2
You can render blocks of maths by wrapping with $$
so
$$
\hat{H}\Psi=E\Psi
$$
will render as
You can also do it inline with a single $ so that $E=mc^2$
becomes E=mc^2