HP 10413 Datasheet download pdf (Page 264)

264

ARG(complex or vector)

This function, also found on the keyboard,

returns the size of the angle defined by

regarding the complex number as a vector.

For example ARG(4+2i) would be 26 565⋅

"

.

The same information can, of course, be

obtained using trig.

The reason for the double brackets is that

every function used by the calculator uses

brackets (hence the outer pair) but so too do

complex numbers (hence the inner pair).

Using ARG(a+bi) instead avoids this.

CONJ(complex)

This function returns the complex conjugate.

Eg. If 23zi=+ , then find the complex

conjugate z .

Answer (see right):

23zi=−

See also: IM,ARG,RE

IM(complex) &

RE(complex)

These functions return the imaginary and real

parts of the complex number supplied.

See also: CONJ,ARG,RE

Note: As mentioned earlier, a very useful

function ( ) can be found on the

keyboard as the SHIFT function for

‘subtract’. If you enter a complex number

in (r, ) form as shown right, then the

calculator will display it in the form

cos( ) sin( )rr

θ

θ

+ from, and as an (a,b)

ordered pair. Note the cos( ) sin( )rr

θ

θ

+

form is used only when in radian mode.

2 4 6-2

2

4

6

-2

27°

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