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numtheory

  

invcfrac

  

convert a simple periodical continued fraction expansion to a quadratic surd

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

invcfrac(cf)

Parameters

cf

-

simple periodical continued fraction expansion with its pre-period and period (in either list or fraction form)

Description

• 

Important: The numtheory[invcfrac] command has been deprecated.  Use the superseding command NumberTheory[ContinuedFraction][Value] instead.

• 

The invcfrac function returns a quadratic surd which has a simple periodical continued fraction expansion cf.

• 

This function is part of the numtheory package, and so can be used in the form invcfrac(..) only after performing the command with(numtheory). The function can always be accessed in the long form numtheory[invcfrac](..).

Examples

withnumtheory:

fcfrac3112,periodic

f:=5+11+11+13+15+13+11+11+110+11+11+13+15+13+11+11+110+...

(1)

invcfracf

31

(2)

gcfrac35+2912,periodic,quotients

g:=5,1,66,2,2,5,10,1,1,2,2,3,2,1,1,1,268,1,1,1,2,3,2,2,1,1,10,5,2,2,66,1,9,1,3,1,1,1,8,1,1,1,3,1,9

(3)

invcfracg

35+29

(4)

See Also

numtheory

numtheory[cfrac]

numtheory[nthconver]

 


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