Asked by lizzy
I was able to do part a but i need help with part b:
a) If $4000 is invested at 5% interest, find the value of the investment at the end of 8 years if the interest is compounded as follows.
(i) annually $5909.82
(ii) semiannually $5938.02
(iii) monthly $5962.34
(iv) weekly $5966.15
(v) daily $5967.14
(vi) continuously $5967.30
b) If A is the amount of the investment at time t for the case of continuous compounding, write a differential equation satisfied by A.
I though it was 0.04(4000)(t) but that's wrong
a) If $4000 is invested at 5% interest, find the value of the investment at the end of 8 years if the interest is compounded as follows.
(i) annually $5909.82
(ii) semiannually $5938.02
(iii) monthly $5962.34
(iv) weekly $5966.15
(v) daily $5967.14
(vi) continuously $5967.30
b) If A is the amount of the investment at time t for the case of continuous compounding, write a differential equation satisfied by A.
I though it was 0.04(4000)(t) but that's wrong
Answers
Answered by
oobleck
(vi) A = 4000e^.05t
dA/dt = 200 e^.05t
so
dA/dt = 0.05 A
or
dA = 0.05A dt
dA/dt = 200 e^.05t
so
dA/dt = 0.05 A
or
dA = 0.05A dt
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