Hp 33s User Manual Page 287

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Miscellaneous Programs and Equations 17–5
Part 2. What interest rate would reduce the monthly payment by $10
?
Keys:
(In RPN mode)
Display: Description:
|H
ºº1.1-ª
Displays the leftmost hart of the
TVM equation.
I
@
.)
Selects I; prompts for P.
{J
@
.)
Rounds the payment to two
decimal places.
10
@
.)
Calculates new payment.
g
@
)
Stores –176,89 in P; prompts for
N.
g
@
)
Retains 36 in N; prompts for F.
g
@
8)
Retains 0 in F; prompts for B.
g
#
/
)
Retains 5750 in B; calculates
monthly interest rate.
12
z
)
Calculates annual interest rate.
Part 3. Using the calculated interest rate (6.75%), assume that you sell the car
after 2 years. What balance will you still owe
?
In other words, what is the future
balance in 2 years
?
Note that the interest rate, I, from part 2 is not zero, so you won't get a
#
&
error when you calculate the new I.
Keys:
(In RPN mode)
Display: Description:
|H
ºº1.1-ª
Displays leftmost part of the TVM
equation.
F
@
.)
Selects F; prompts for P.
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