SAT数学常用的逻辑符号有哪些

>>SAT数学逻辑符号：SAT数学常用的逻辑符号有哪些

>>SAT考试精品课程训练

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).

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.

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.

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

x ⊢ y means y is derived from x。

以上就是关于SAT数学常用的逻辑符号有哪些的相关内容，供给大家学习和参考，最后小编和坦途网SAT考试频道预祝大家在考试中取得优异的成绩！