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anonymous
 one year ago
Given an exponential function for compounding interest, A(x) = P(.77)x, what is the rate of change?
anonymous
 one year ago
Given an exponential function for compounding interest, A(x) = P(.77)x, what is the rate of change?

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paki
 one year ago
Best ResponseYou've already chosen the best response.0To find rate we subtract the rate in this case is .77 or 77%  1 or 100% and that would give you the rate in this case its decreasing by an 18%

freckles
 one year ago
Best ResponseYou've already chosen the best response.1I thought rate of change was derivative...

freckles
 one year ago
Best ResponseYou've already chosen the best response.1rate of change is derivative

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What did you get as an answer?

freckles
 one year ago
Best ResponseYou've already chosen the best response.1I think he thought you were looking for the interest rate

freckles
 one year ago
Best ResponseYou've already chosen the best response.1\[A=P(.77)^x \\ \frac{A}{P}=(.77)^x \] P is a constant take ln( ) of both sides

freckles
 one year ago
Best ResponseYou've already chosen the best response.1this will allow you to bring down that power of x

freckles
 one year ago
Best ResponseYou've already chosen the best response.1and then differentiate both sides

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got 23% as an answer?!

freckles
 one year ago
Best ResponseYou've already chosen the best response.1wait? does that mean you aren't looking for rate of change and you are looking for interest rate?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no! I think i am looking for rate of change. Why dont we just try out both?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0−0.13% −13% 0.23% −23% these are the answer choics

freckles
 one year ago
Best ResponseYou've already chosen the best response.1none of those are the rate of change so you must be looking for interest rate

freckles
 one year ago
Best ResponseYou've already chosen the best response.1@paki gave you the way to calculate the interest rate above just do 77%100%
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