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    Posted December 13, 2012 by
    PCSTEFANIDES
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    SPIRALOGARITHM HAND DRAWN By Panagiotis Stefanides

     

    SPIRALOGARITHM HAND DRAWN By Panagiotis Stefanides
    http://www.stefanides.gr/why_logarithm.htm


    SPIRALOGORITHM [ name coinned by Panagiotis Stefanides].
    Configuration giving simple relationships between spirals and logarithms.

    Introduced here is the STEPHANOID CURVE[ authors proposal of nomination] , the mirror images of two Archimedes curves of a special form,
    passing Zero x-y point and on which lie vector length logarithms, of vector line lengths on the spiral[ one on top of the other].

    Let X=e^[ Θ/90], be a point on the curve of this Spiral of Logarithmic base e ,on the plane of x-y co-ordinate system of Cartesian axes.
    Phasor OX is at angle Θ from the x-axis taking anticlockwise direction as positive(Θ on x-axis is taken zero )and clockwise negative.
    This Spiral crosses the [-y ] axis at point [ 1/e ],then the x axis at point 1 [moving anticlockwise] ,following crosses the y axis at point with value e ,then the [-x] axis at e^2... etc...
    This gives ln(X)=[ Θ/90], OR in RADIANS ln(X)= Θ/[Pi/2].

    The 0 of the x y cross section is the assymptotic point of the Spiral.

    This theory is illustrated under:
    http://www.stefanides.gr/why_logarithm.htm


    TRANSFORMING [e^x] EXPANSION INVOLVING OTHER THAN [e ] BASES :

    e^x = 1+x+(x^2/2!)+(x^3/3!)+(x^4/4!)+(x^5/5!)
    may be transformed to other than e bases.
    For instance,
    Lets for reasons that serve my web work(references below) , instead of x use Z
    where Z is a ral positive or negative number.

    So e^Z= 1+ Z+ [Z^2]/2!+…+.....

    Let X=e^Z , AND Log_e[X]=Z

    So X= 1 + Log_e[X] + {[Log_e[X] ]^2}/2!+....

    Raise e^Z to the power of N (POSITIVE REAL NUMBER),we get

    e^[NZ]=1+NZ+{[NZ]^2}/2!+...

    Let e^N = T SO THAT Log_e[T]=N

    WHERE T is a POSITIVE REAL NUMBER
    [BASE OF ANOTHER THAN e LOGARITHM ] , then ,

    e^[NZ]= T^Z=1+Z[Log_e[T]] + [{Z[Log_e[T]]}^2]/2!+.....

    Let this T^Z = Y, or Log_T[Y]=Z

    AND ( from above ) Log_e[X]=Z = Log_T[Y] ,so

    X=e^{Log_T[Y]} =1+{Log_T[Y]} + =…. AND

    Y=T^{ Log_e[X] }=1+ [{ Log_e[X]}*{Log_e[T]} ]+…+….or

    Y= 1+[{ Log_T[Y]}*{Log_e[T]} ] +…+…


    According to this involved theory :
    Log_e[X] = Log_T[Y] ==Z= Θ( deg)/90=Θ(rad)/[Pi/2]

    For BASE T=1 then Y= T^Z=1 [ MODULUS (1) ,ARGUMENT (Θ) ] or
    1^Z=1 [ MODULUS{sqrt[cos^2[theta] +sin^2[theta] }=1 ] ,
    ARGUMENT (Θ)

    or 1^{ Θ/[Pi/2] }=1[ MODULUS ( 1) ,ARGUMENT (Θ) ]
    i.e. the ROOTS and POWERS of UNITY ,
    And Log_1[1] = Z = Θ/90=Θ/[Pi/2].

    This is the case of a CIRCLE, a DEGENERATED SPIRAL OF BASE 1
    This CIRCLE passes points on x and y axes :
    x=1 , y=1

    REF:
    http://www.stefanides.gr/why_logarithm.htm

    http://mathforum.org/kb/thread.jspa?threadID=1191778&messageID=3882495#3882495
    http://www.stefanides.gr/Html/logarithm.htm
    http://www.stefanides.gr/Html/Nautilus.htm


    © Copyright Panagiotis Stefanides

    Panagiotis Stefanides
    http://www.stefganides.gr

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