Answer to Question #318981 in Calculus for sarah

Question #318981

If the net investment function is given by I (t) = 100e^ {0.1t} calculate

(a) The capital formation from the end of the second year to the end of the fifth year;

(b) The number of years required before the capital stock exceeds $100 000


1
Expert's answer
2022-03-30T04:46:45-0400

(a) we have to calculate:

I(5)I(2)=100e0.15100e0.12=100(1.6491.221)=42.8I(5) - I(2) = 100 e^{0.1*5} - 100 e^{0.1*2} = 100(1.649 - 1.221)=42.8

(b)

I(t)=100000100e0.1t=100000e0.1t=1000ln(.)0.1t=6.908t=69.08I(t) = 100000\\ 100 e^{0.1*t} = 100 000\\ e^{0.1*t} = 1000 | ln(.)\\ 0.1*t = 6.908\\ t = 69.08


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