Use logarithmic differentiation to find the derivative of the function. 
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Present Value
The present value of a future sum of money or cash flow series calculated with a particular rate of return.
Market Price
The rate for exchanging assets or services in the marketplace currently.
Annuity Payments
Periodic payments made for a specified period or for the life of the recipient, often used in retirement planning.
Future Value
The value of an investment or cash flow at a specific future date, considering compound interest.
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