[All Steps] Investment The table gives the value A(P, r) of an investment of P dollars after 2 years in an account whose annual percentage yield is r \%.
Question: Investment The table gives the value \(A(P, r)\) of an investment of \(P\) dollars after 2 years in an account whose annual percentage yield is \(r \%\).
c. Repeat part \(a\); however, instead of entering the interest rate in whole numbers, enter \(r\) in decimals so that \(r=0.02\) at \(2 \%, r=0.03\) at \(3 \%\), and so on.
d. Use the model from part \(c\) to find \(\frac{d A(14,000, r}{d r}\) when the APY is \(12.7 \%\). Compare this answer w that of part $b .$
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