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Page 5-2
Simple operations with algebraic objects
Algebraic objects can be added, subtracted, multiplied, divided (except by
zero), raised to a power, used as arguments for a variety of standard
functions (exponential, logarithmic, trigonometry, hyperbolic, etc.), as you
would any real or complex number. To demonstrate basic operations with
algebraic objects, let’s create a couple of objects, say ‘
π*R^2’ and
‘g*t^2/4’, and store them in variables A1 and A2 (See Chapter 2 to learn
how to create variables and store values in them). Here are the keystrokes
for storing variables A1 in ALG mode:
³„ì*~rQ2™K~a1`
resulting in:
The keystrokes corresponding to RPN mode are:
„ì~r`2Q*~a1K
After storing the variable A2 and pressing the key, the screen will show the
variables as follows:
In ALG mode, the following keystrokes will show a number of operations
with the algebraics contained in variables @@A1@@
and @@A2@@ (press J to
recover variable menu):
@@A1@@ + @@A2@@ ` @@A1@@ - @@A2@@ `
SG49A.book Page 2 Friday, September 16, 2005 1:31 PM