Graphing calculator.

hp40g+.book Page 45 Friday, December 9, 2005 1:03 AM

## CAS Functions on the MATH menu

i
ABS
ARG
CONJ
DROITE
Computer Algebra System (CAS)
When you are in the
Equation Writer and press
available to you is
displayed. Many of the
match the functions available from the soft-key menus in
the Equation Writer; but there are other functions that are
only available from this menu. This section describes CAS
functions that are available when you press
Equation Writer (grouped by main menu name).
All the functions on this menu are also available on the
on page 14-10 for a description of these functions.
1 –
Inserts i (=
).
Determines the absolute value of the argument.
Example
Typing ABS(7 + 4i) yields
See "ARG" on page 13-7.
See "CONJ" on page 13-7.
DROITE returns the equation of the line through the
Cartesian points, z
, z
. It takes two complex numbers, z
1
2
and z
, as arguments.
2
Example
Typing:
DROITE((1, 2), (0, 1))
or:
DROITE(1 + 2·i, i)
in the
65
, as does ABS(7 – 4i).
14-45
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