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This is exponential growth: Find an exponential function of the form f(x) =ba^x or f(x)=ba^x+c: Given (0,2) and (1,5).
Guest Apr 20, 2012
 #1
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f( x ) = ba^x

Guest:

Given (0,2) and (1,5).


f( 0 ) = 2
f( 1 ) = 5

2 = b*a^0
5 = b*a^1

[input]solve( 2 = b*a^0, 5 = b*a^1 )[/input]
b = 2
a = 2.5


test:
f( 0 ) = 2 * 2.5^0 = 2 (check)
f( 1 ) = 2 * 2.5^1 = 5 (check)
admin  Apr 20, 2012
 #2
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thank you
Guest Apr 21, 2012

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