Sharp EL-738 EL-738 Operation Manual - Page 73

Appendix - rounding

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Appendix Financial Calculation Formulas TVM solver PMT, PV, FV, N Error If PMT ≠ 0 or N ≠ 1 then find i using the following equations: + Error i≤ -1 Amortization calculations Calculations (for PV, PMT, and i, see the TVM solver) END INT(1) = ROUND(-PV × i) BGN INT(1) = 0 PRN(1) = -INT(1) + ROUND(PMT) BAL(1) = PRN(1) + PV INT(m) = ROUND(-BAL(m - 1) × i) PRN(m) = -INT(m) + ROUND(PMT) BAL(m) = PRN(m) + BAL(m - 1) ROUND(NUM): If a display notation tab setting has been chosen, NUM is rounded and truncated to the specified number of places after the decimal point. Results I/Y If PMT = 0 then If N = 1 then Error AMRT P1 > AMRT P2 Discounted cash flow analysis m m CF where i = RATE(I/Y) 100 , CFimax = the maxi- mum data set number IRR is obtained as i, which satisfies NPV = 0 in the above equations. 72

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72
Appendix
Financial Calculation Formulas
TVM solver
PMT, PV, FV, N
Error
I/Y
If PMT = 0 then
If N = 1 then
If PMT
≠
0 or N
≠
1 then
fi
nd i using the fol-
lowing equations:
+
Error
i
≤
–1
Amortization calculations
Calculations
(for PV, PMT, and i, see the TVM solver)
END INT(1) = ROUND(–PV
×
i)
BGN INT(1) = 0
PRN(1) = –INT(1) + ROUND(PMT)
BAL(1) = PRN(1) + PV
INT(m) = ROUND(–BAL(m – 1)
×
i)
PRN(m) = –INT(m) + ROUND(PMT)
BAL(m) = PRN(m) + BAL(m – 1)
ROUND(NUM): If a display notation tab
setting has been chosen, NUM is rounded and
truncated to the speci
fi
ed number of places
after the decimal point.
Results
Error
AMRT P1 > AMRT P2
Discounted cash flow
analysis
m
m
CF
where i =
RATE(I/Y)
100
, CFimax = the maxi-
mum data set number
IRR is obtained as i, which satis
fi
es NPV = 0
in the above equations.