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  |      Rashi is Simple Version 2.0                         |
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VERSE: Dt21-17a

========================= Dt21-17a ==============================

SUCCINT SUMMARY:
----------------
One of Rashis secondary goals is to explain complicated
passages. For example a passage might require mathematics,
algebra, diagrams etc.

EXAMPLE
-------
Dt21-17 states that the eldest son inherits DOUBLE.
Rashi illumines. We further illumine using the type
of examples provided by Rambam in his laws of Inheritance
=================================================================
ITEM                     DETAIL
======================== ========================================
RASHI RULE CLASS:        SPREADSHEETS
RASHI SUBRULE CLASS      ALGEBRA
RASHI WORKBOOK PRINCIPLE #30
SEE BELOW                LIST690a
Rashis requiring         Spreadsheets/Algebra
===============================================================

==================== LIST690a ==================================

List of verses where Rashi illumines thru use
of spreadsheets, mathematics, and algebra.
The latest addition is the Rashi about the 1st-born
All items may be found at
            http://www.Rashiyomi.com/
================================================================
VERSE         Item Spreadsheet is used for
============  ==================================================
dt21-17a.htm  How to give 1st-born double *1
ex38-24b.htm  Computation of relative value of Biblical currency
nu03-39b.htm  Accounting of Levite children
nu31-26a.htm  Division of booty in war
gn05-32b.htm  Computation of relative ages of Noachs children

NOTES
-----
*1  Many people are familiar with the concept of the
    FORMULA PLUG IN. That is a problem is solved by a
    formula which you plug into.

    But some problems intrinsically cannot (initally)
    be solved by a formula. Instead you have to
    formulate the problem algebraically and solve;only
    then do you have the formula.

    In other words these problems are solved by
    the EQUATION vs the FORMULA

    Thus the statement that the eldest gets double
    suggests the following model.

    - Suppose the are B brothers
    - Suppose 1 of them is eldest
    - The Fathers total assets are T (Total)

    - Let A be the amount each brother inherits
    We have no formula for A

    - Then each of the B-1 brothers obtains A
    - The eldest obtains double, 2A.
    - Together this exhausts the Fathers estate, T

    Hence we have (B-1)A + 2A = (B+1)A = T

    This gives rise to the formula  A = T / (B+1)

    An example is a father with 100,000 and 4 children
    - T=100,000
    - B=4
    - So each child take T/(B+1) = 100000/5 = 20,000
    - Eldest takes 2*20000=40000
    - Other 3 take 20000
    - Total distribution =3*20000+40000=100000

    See Rambam Inheritance Chapter 2
================================================================
---------------------------------------------------
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Volume 19 Number 2


#*#*#*#*#  (C) 2001, RashiYomi Inc. Dr Hendel President #*#*#*#*#