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题库 / Prep2007E1-DS-97
Is ~$\sqrt{\left ( x-3 \right )^{2}}$~ = 3 - x ？
(1) ~$x\neq 3$~
(2) ~$-x\left | x \right |$~>0
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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题干从X=3分开 左右各两段
（2） X的定义域是X
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