Hewlett-Packard HP 33s Manual

A SERVICE OF

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Entering and Evaluating Equations 6–17

Single

letter

name

No implied

multiplication

Division is done

before addition

Parentheses used to

g

roup items

P=A+B+Hx(1 SIN(T)+1 SIN(F))

ΊΊ

Th

e next equation also obeys the syntax rules. This equation uses the inverse

function,

#1 1!22

, instead of the fractional form,

ª 1!2

. Notice that

the SIN function is "nested" inside the INV function. (INV is typed by



.)

/--º1#1 1!22-#1 1222

Example: Area of a Polygon.

The equation for area of a regular polygon with n sides of length d is:

Area =

/n)sin(

)/cos(

4

1

π

π n

n d

2

d

2/n

π

You can specify this equation as

/)ºº:º 1

π

ª2ª 1

π

ª2

Notice how the operators and functions combine to give the desired equation.

You can enter the equation into the equation list using the following keystrokes:

|HL

A

|

.25

zL

N

zL

D



2

zR|

NqL

N

|`qO|NqL

N

|`