find the foci of an ellipse or a hyperbola - Maple Help

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geometry[foci] - find the foci of an ellipse or a hyperbola

Calling Sequence

foci(fn, f)

Parameters

fn

-

(optional) list of two names

f

-

ellipse or hyperbola

Description

• 

The routine returns a list of two foci of the given ellipse or hyperbola f.

• 

If the first optional argument fn is given, the names of the two foci are the two elements of the list fn.

• 

See help pages for hyperbola and ellipse for definitions of the foci.

• 

Use routine detail for more details on the foci.

• 

The command with(geometry,foci) allows the use of the abbreviated form of this command.

Examples

withgeometry:

_EnvHorizontalName:=x:_EnvVerticalName:=y:

ellipsee1,2x2+y24x+4y=0:

focie1

foci_1_e1,foci_2_e1

(1)

mapcoordinates,

1,23,1,2+3

(2)

focif1,f2,e1

f1,f2

(3)

focie1

f1,f2

(4)

mapcoordinates,

1,23,1,2+3

(5)

See Also

geometry[ellipse], geometry[HorizontalName], geometry[hyperbola], geometry[VerticalName]


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