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knowLittle
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Homework Statement
The value of a tract of timber is
## V(t)=100,000 e^{0.8\sqrt{t} }
##
where t is the time in years, with t=0 corresponding to 1998.
If money earns interests continuously at 10%, the present value of the timber at any time t is ## A(t)= V(t)e^{-.10 t} ##
Find the year in which the timber should be harvested to maximize the present value function.
The Attempt at a Solution
When V(0)= 100,000 is the value of timber in 1998.
## A(t)= 100,000 e^{0.8\sqrt{t} }\ e^{-.10 t} ## I assume that to maximize this function I need to make the exponential positive rather than negative.
But, I don't know hot to proceed from here.