Casio FX-115MS - ADDITIONAL FUNCTIONS Uživatelská příručka stáhnout pdf (Strana 11)

E-9

Imaginary axis

Real axis

k Absolute Value and Argument

Calculation

Supposing the imaginary number expressed by the

rectangular form

z = a + bi is represented as a point in the

Gaussian plane, you can determine the absolute value (

and argument (

␪

) of the complex number. The polar form

is r⬔

␪

• Example 1: To determine the absolute value (

r) and

argument (

␪

) of 3+4i (Angle unit: Deg)

(r =

␪

53.13010235

°)

(r 

) A A R 3 + 4 i T =

(

␪



53.13010235

°) A a R 3 + 4 i T =

• The complex number can also be input using the polar

form

r⬔

␪

• Example 2:

2 ⬔ 45 

 i

(Angle unit: Deg)

L 2 A

Q 45 =

A r

k Rectangular Form ↔ Polar Form

Display

You can use the operation described below to convert a

rectangular form complex number to its polar form, and a

polar form complex number to its rectangular form. Press

A r to toggle the display between the absolute value

(

r) and argument (

␪

• Example: 1

 i ↔

1.414213562 ⬔ 45

(Angle unit: Deg)

1 + i A Y = A r

L 2 A Q 45 A Z = A r

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 29 30

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