HP 12C - Calculations of List and Net Prices with Discounts; Exponential Curve Fit

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Calculations of List and Net Prices with Discounts
• L = List price.
• N = Net price.
• D = Discount(%).
•
•
•
Statistics
Exponential Curve Fit
• y = Ae
Bx
•
•
• = -Ae
Bx
Logarithmic Curve Fit
• y = A + B(ln x)
D' 1
D
100
----------
–=
L
N
D'
1
D'
2
SSDDF××
--------------------------------------------------=
... D’
x
D
x
1
N
LD
1
D
2
× DD× D
X1–
×()
--------------------------------------------------------------
–


=
...
B
Σ x
i
y
i
1
n
--- Σ x
i
() Σ lny
i
()–ln
Σ x
i
2
1
n
---
Σ x
i
()
2
–
------------------------------------------------------------=
A
Σ y
i
ln
n
------------- B
Σ x
i
n
--------–exp=