BARS::Salt River Pima-Maricopa Indian Community in Arizona

While driving to school on the northbound Loop 101 on 10 May 2012, MathBabbler exited the Loop 101 at Thomas Road to take a picture of a field located on the Salt River Pima-Maricopa Indian Community in Arizona. MathBabbler's detour resulted in him finding some steet sign math.

The street signs say...

   +---------------+
   | N. 92 ND 9200 |
   +---------------+
       +-------+
       | STOP  |
       ---------
       | 4-way |
       +-------+
   the numbers are:  92  9200  4

   the math is:  log(9200 / 92) = sqrt(4)
   
   more math: log(9200) - log(92) = sqrt(4)

   rsStateEval:  log(9200 / 92) * sqrt(4) = 48
   * Arizona was the 48th state admitted to the Union.

   spf(9200) = 2^4+5^2+23 = 41; spf(92) = 2^2+23 = 27; spf(4) = 2+2 = 4
   * spf(n) = the sum of the prime factors of n
   * domain: n must be a positive composite number

   BARSfunc rs42Eval:  spf(9200) + 4 - cuberoot(spf(92)) = 42
   * 42 is the "Answer to Life, the Universe, and Everything"

   BARSfunc rsStateEval:  
   reverse_digits(spf(9200)) * cuberoot(spf(92))! / sqrt(4) = 48
   * reverse_digits(n) = the digits of n reversed
   * domain:  n must be a positive prime number
   * Arizona was the 48th state admitted to the Union.

   BARSfunc off-by-one rsAgeEval: spf(9200) + cuberoot(spf(92)) * 4 = 54-1
   * RoadHacker was 54 years young when he found these street signs.


Creator: Gerald Thurman [gthurman@gmail.com]
Created: 10 May 2012

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