Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.
| rev | Admin | (Created page with "'''Solution: D''' <math display = "block"> \begin{array}{l l}{{P_{A}=A(1+i)^{-2}+B(1+i)^{-9}}}\\ {{P_{L}=95,000(1+i)^{-5}}}\\ {{P_{L}^{\prime}=-2A(1+i)^{-9}-9B(1+i)^{-10}}}\end{array} </math> Set the present values and derivatives equal and solve simultaneously. <math display = "block"> \begin{align*} 0.92456A + 0.70259B &= 78, 083 \\ -1.7780.21-6.0801B &=-375,400 \\ B &=\frac{78,083(1.7780/0.92456)-375,400}{0.70259(1.7780/0.92456)-6.0801}=47,630 \\ A &=[78,083-0.7...") | Nov 20'23 at 19:56 | +576 |