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SAT常用数学符号大全

时间:2016-09-19 13:31来源: 作者: 点击:
SAT常用数学符号大全, SAT数学考试是需要大家记忆专业词汇最多的考试,当然在记忆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

    SAT数学考试是需要大家记忆专业词汇最多的考试,当然在记忆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.

    以上就是对SAT数学题常用符号的介绍,希望对大家有帮助。

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