Not

可用

Logical NOT operation.

形式

! expr

验证过的示例Not[True] → False Not[False] → True Not[True, True] → Not::argx: Not called with 2 arguments; 1 argument is expected. .* (regex*) Not[True, True]ToString[Hold[Not[a]^2], InputForm] → Hold[( !a)^2]ToString[Hold[Not[a] && b], InputForm] → Hold[ !a && b]ToString[!#1 || !#2 &, InputForm] → !#1 || !#2 &

在 Qurak 上运行搜索参考

用于

Use logical operators - 7 步
Replace or remove invalid or missing data - 23 步

主题

Boolean Computation - Basic Boolean Operators
Logic And Boolean Algebra - Logical Operators »
Syntax - Mathematics & Operators
Testing Expressions - Logical Combinations »
Theorem Proving - Predicates

相关

BooleanConvert LogicalExpand BitNot Nand Nor And Or False Implies True AllTrue AnyTrue

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