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- $ X = \\\left\\\{ {\\\frac{3}{2}} \\\right\\\}$.
- $ X = \\\left\\\{ 0 \\\right\\\}$.
- $ X = \\\left\\\{ 1 \\\right\\\}$.
- $ X = \\\left\\\{ {1;\\\frac{3}{2}} \\\right\\\}$.