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Entering the Equation. Press [l[EQUATIONS], then (V] (if necessary)
until the HP-22S displays TYPE HMEW E@N. Type the equation
(B(H=HMS] {+HR} types HR() and press [INPUT].
Example: Calculating the Distance Between Two Places. Find
the statute miles between Philadelphia, Pennsylvania (40°35'N,
75°10'W) and Corvallis, Oregon (44°35'N, 123°16'W).
Keys:
Display:
Description:
@(moDES] {DG}
Sets Degrees mode.
A?value
Prompts for latitude;.
40.35
T?value
Stores A, prompts for
latitude,.
44.35
0?value
Stores T; prompts for
longitude.
75.1
G?value
Stores O; prompts for
longitude,.
123.16
D=2,426.9794
Calculates statute
miles.
Interest Rate Conversions
Interest rates are generally stated as nominal interest rates. A nominal
interest rate is an annual rate that is compounded periodically—for
example, 18% per year, compounded monthly (12 times per year).
When investments have different compounding periods, effective in-
terest rates are used to compare them. The effective rate is the annual
rate that would produce the same interest earnings as the nominal
rate compounded P times per year. For example, earning 18% annual
rate compounded monthly (nominal rate) is equivalent to earning
19.56% annual interest.
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8: Additional Examples
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