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SAT数学符号的英文表达

信息来源:网络  发布时间:2015-03-12

  在记忆SAT数学词汇的同时大家也需要关注一下SAT数学题常用的符号,这些符号用英文是如何表示的呢?我们该如何理解呢?下面我们来看看SAT数学符号的英文表达
 

  Logical Symbols A ? B means if A is true then B is also true; if A is false then nothing is said about B. → may mean the same as ? (the symbol may also indicate the domain and codomain of a function; see table of mathematical symbols)。
 

  Logical Symbols
 

  A ·B means if A is true then B is also true; if A is false then nothing is said about B.
 

  → may mean the same as ? (the symbol may also indicate the domain and codomain of a function; see table of mathematical symbols)。
 

  · may mean the same as ? (the symbol may also mean superset)。
 

  A· B means A is true if B is true and A is false if B is false.
 

  The statement ?A is true if and only if A is false.
 

  The statement A ∧ B is true if A and B are both true; else it is false.
 

  The statement A ∨ B is true if A or B (or both) are true; if both are false, the statement is false.
 

  · x: P(x) means P(x) is true for all x.
 

  · x: P(x) means there is at least one x such that P(x) is true.
 

  · x: P(x) means there is exactly one x such that P(x) is true.
 

  x· y means y is derived from x.
 

  以上就是对SAT数学符号的英文表达方式的总结,希望对大家有帮助,预祝大家取得满意的SAT成绩
 

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