BARS::Highway Signs in Globe, Arizona

These highway signs were on eastbound US Hwy-60 in Globe, Arizona.

The highway signs say...

   +-------+   +-------+
   | East  |   | East  |
   | US 60 |   | US 70 |
   +-------+   +-------+
   +-------+   +-------+
   | North |   | South |
   | AZ 77 |   | AZ 77 |
   +-------+   +-------+
   the numbers are:  60  70  77  77

   the math is:  log(70 - 60) * 77 = 77

   observe...
      70 - 60 = 10
      log(10) = 1

These signs cannot be submitted to RoadSignMath.com because RSM discountinued allowing the log() function during April of 2006.

MathBabbler supported this change by RSM because the log(n) function comes with a free 10. To do logyn, a y is needed, but log(n) does not require a ten.

BARS will continue to use the log(n) and ln(n) functions.

Update::2008.04.30

During late-April, 2008, MathBabbler created the split_into_squares_sum(n) function.

   the numbers are:  60  70  77  77

   split_into_squares_sum(77) = { 64, 9, 4 }

   the numbers become:  60  70  77  64  9  4

   the math is:  70 - (sqrt(77 + 4) - sqrt(64) + 9) = 60

   observe...
      77 + 4 = 81
      sqrt(81) = 9
      sqrt(64) = 8
      9 - 8 + 9 = 10
      70 - 10 = 60     

   This is a RSeval because the highway signs are on US Hwy-60.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 01 May 2006
+ added split_into_squares_sum(n) usage

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