Wednesday

January 28, 2015

January 28, 2015

Posted by **Shay** on Wednesday, March 17, 2010 at 5:39pm.

- Math (FST Exponential & Logarithm) -
**Reiny**, Wednesday, March 17, 2010 at 7:35pmsubbing in the 2 points gives us

1) 120 = a(b)^9

2) 216 = a(b)^12

divide 2) by 1)

216/120 = b^12/b^9

b^3 = 9/5

b = (9/5)^(1/3) = 1.2164

put this back into 1)

120 = a(1.2164)^9

a = 20.5761

y = 20.5764(1.2164)^x

(I checked for (12,216), it works)

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