Cari nilai f
f=y\left(||x-1|-2|-3\right)
y\neq 0
Cari nilai x
\left\{\begin{matrix}x=-1\text{; }x=3\text{, }&f=-3y\text{ and }y\neq 0\\x=-\frac{f}{y}\text{; }x=\frac{f}{y}+2\text{, }&\left(f\geq -y\text{ or }f\geq -3y\right)\text{ and }\left(f\leq -3y\text{ or }f\leq -y\right)\text{ and }y\neq 0\\x=\frac{f}{y}+6\text{; }x=-\frac{f}{y}-4\text{, }&\left(f\geq -3y\text{ and }y>0\right)\text{ or }\left(f\leq -3y\text{ and }y<0\right)\end{matrix}\right,
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