HP 48gII Manual de usuario descargar pdf (Pagina 77)

Page 4-6

Functions applied to complex numbers

Many of the keyboard-based functions and MTH menu functions defined in

Chapter 3 for real numbers (e.g., SQ, ,LN, e

, etc.), can be applied to

complex numbers. The result is another complex number, as illustrated in the

following examples. [Note: not all lines will be visible in the screen of your

calculator when finishing with the exercises in the following figures].

Note: When using trigonometric functions and their inverses with complex

numbers the arguments are no longer angles. Therefore, the angular measure

selected for the calculator has no bearing in the calculation of these functions

with complex arguments.

Function DROITE: equation of a straight line

Function DROITE takes as argument two complex numbers, say, x

+iy

and

+iy

, and returns the equation of the straight line, say, y = a+bx, that

contains the points (x

) and (x

). For example, the line between points

A(5,-3) and B(6,2) can be found as follows (example in Algebraic mode):

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HP 48gII Manual de usuario Pagina 77