1, sign as a noun means "sign; Symbol; Mark; Gestures; Signboard. "

2. sign as a transitive verb means "sign"; Signal. "

3. sign as an intransitive verb means "sign"; Signature ".

In mathematical symbols, sign is also called sgn, which means symbol. Symbolic function (generally represented by symbol (X)) is a very useful function, which can help us realize some constructions that are difficult to realize directly in the geometric sketchpad.

Extended data

Usage of symbols

1, sign means "sign" when used as a noun, and can be interpreted as "signature" when converted into a verb. Generally speaking, people sign their names on documents and letters. Sign as a noun can also be interpreted as "gesture", and when it is converted into a verb, it is "gesture", which means to express an intention with a gesture when it is impossible to express it in words or for some reason.

2.sign can be used as an intransitive verb or a transitive verb. When used as transitive verbs, nouns, pronouns and that clauses can be used as objects, and infinitives can also be used as compound objects of object complements.

3.sign can be used in passive structure when it is interpreted as "signature, signature", but not in passive structure when it is interpreted as "signaling, gesture".