Answer:
[tex]\large\boxed{\{-1,\ 0\}}[/tex]
Step-by-step explanation:
[tex]Integer:\ \mathbb{Z}=\{...,\ -2,\ -1,\ 0,\ 1,\ 2,\ 3,...\}\\\\M=\{y|y\in\mathbb{Z}\ \wedge\ -2<y<1\}=\{-1,\ 0\}[/tex]
[tex]-2<y\to\{-1,\ 0,\ 1,\ 2,\ 3,\ 4,\ 5,\ ...\}\\\\y<1\to\{...,\ -3,\ -2,\ -1,\ 0\}[/tex]