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SAT考试数学题的常见符号

  对于备考SAT考试的同学来说,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?下面我们来看看这些SAT数学题常用符号的全部内容吧。

  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.

  以上就是这些SAT数学题常用符号的全部内容,包括了大家在备考SAT数学考试中经常会用到的一些符号的英文表达的意思,大家可以在备考SAT数学考试的过程中,适当的熟悉记忆一下这些符号和意思。