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Ronch [10]
3 years ago
12

A deposit of $5000 is made to a bank account paying 1.5% annual interest, compounded continuously. (a) Write the differential eq

uation for the balance in the account, B, as a function of time, t, in years. (b) Solve the differential equation. (c) How much money is in the account in 10 years?
Business
1 answer:
seraphim [82]3 years ago
7 0

Answer:

Please find the detailed answer as follows:

Explanation:

A. Step 1. The differential equation is

dB / dt = 0.015B - 5000

 

Step 2.   now we must integrate it to find it ias a function of time

dB /0.015B - 500 = dt

 

Step 3. integrate

=> ln ( 0.015 B - 5000) = 0.015t + 0.015c

=> 0.015B - 5000 = e^0.015t .e^0.015c

here .e^0.015c is constant let it be Bo

b. =>B = 1/0.015 [ Bo e^0.015t + 5000 ]

at t = 0 , B = 5000  

=> 5000 x 0.015 = Bo => B o = 75

c . B = 1/0.015 [ 75 e^0.015t + 5000 ]

put t = 10  

=> B = $ 339142.50

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