- #1
Macleef
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Homework Statement
If you invest $5000 in a stock that is increasing in value at the rate of 12% per year, then the value of your stock is given by:
f(x) = 5000(1.12)^x, where x is measured in years
a) find average value from x = 2 to x = 3
b) find instantaneous value at x = 3
Homework Equations
y = b^x
y' = (b^x)(ln^x)
The Attempt at a Solution
a) f(x) = 5000(1.12)^{5 - 2} = 5000(1.12)^3 = 7024.64
b) f'(x) = (5000(1.12)^3)(ln 1.12) = (7024.64)(0.113) = 796.093