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type/point

check for a point

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

type(P, point)

Parameters

P

-

any algebraic expression

Description

• 

This function returns true if and only if P is an equation or set of equations, each of which are of the form x=e where x is a name that is not a constant, and e is an algebraic expression that does not contain x.

• 

The names x are intended to define the coordinate space, and the expressions e are the corresponding coordinate values.

• 

Objects of type point differ from objects of type Point in the (now deprecated) student package in that the coordinates are defined by names rather than by position in a list.

Examples

typea=4,point

true

(1)

typea=4,b=2,point

true

(2)

typed=3,a+b=c,point

false

(3)

See Also

limit

type