For a system of equations, I would like to have a notation with a left curly bracket. Usually, I am using
\begin{equation}
\left\{
\begin{array}{ll}
f(x)=&x^2+\ldots\\
g(x)=&x^3+\ldots\end{array}\right.
\end{equation}
But this makes a strange empty space between the "=" and the right-hand sides which i do not like since.
Is there a way to improve this easily?
systeme
. – F. Pantigny Feb 28 at 11:17