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Hi,
my problem is that in output log i get the error:
! Missing delimiter (. inserted).
<to be read again>
{
l.45 F_d = \left{
\begin{array}{ l l }


and i don't know what do about it. Can anyone help me with this s**t?

\begin{equation}
\label{eq:zastepczy}
F_d = \left{ \begin{array}{ l l ...