tex cases
$$
X(m,n)=
begin{cases}
x(n),\
x(n-1)\
x(n-1)
end{cases}
$$tex cases
$$
X(m,n)=
begin{cases}
x(n),\
x(n-1)\
x(n-1)
end{cases}
$$Copyright © 2021 Codeinu
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