HP 32SII, Руководство пользователя

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Real–Number Functions 4–7
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Conversion Functions
There are four types of conversions: coordinate (polar/rectangular), angular
(degrees/radians), time (decimal/minutes–seconds), and unit (cm/in, °C/°F,
l/gal, Kg/lb).
Coordinate Conversions
The function names for these conversions are y , x
θ
, r and
θ ,
r y , x .
Polar coordinates ( r
, θ
) and rectangular coordinates ( x , y ) are measured as
shown in the illustration. The angle
θ
uses units set by the current angular
mode. A calculated result for
θ
will be between –180° and 180°, between –
π
and
π
radians, or between –200 and 200 grads.
x
y
r
θ
To convert between rectangular and polar coordinates:
1. Enter the coordinates (in rectangular or polar form) that you want to
convert. The order is
y
š
x or
θ
š
r .
2. Execute the conversion you want: press z q (rectangular–to–polar)
or { r (polar–to–rectangular). The converted coordinates occupy
the X– and Y–registers.
3. The resulting display (the X–register) shows either r (polar result) or x
(rectangular result). Press Z to see
θ
or y .