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Using the Equation Writer (EQW) to create
expressions
The equation writer is an extremely powerful tool that not only let you enter
or see an equation, but also allows you to modify and work/apply
functions on all or part of the equation.
The Equation Writer is launched by pressing the keystroke combination
‚O (the third key in the fourth row from the top in the keyboard). The
resulting screen is the following. Press
L to see the second menu page:
The six soft menu keys for the Equation Writer activate functions EDIT,
CURS, BIG, EVAL, FACTOR, SIMPLIFY, CMDS, and HELP. Detailed
information on these functions is provided in Chapter 3 of the calculator’s
user’s guide.
Creating arithmetic expressions
Entering arithmetic expressions in the Equation Writer is very similar to
entering an arithmetic expression in the stack enclosed in quotes. The
main difference is that in the Equation Writer the expressions produced are
written in “textbook” style instead of a line-entry style. For example, try the
following keystrokes in the Equation Writer screen:
5/5+2
The result is the expression:
The cursor is shown as a left-facing key. The cursor indicates the current
edition location. For example, for the cursor in the location indicated
above, type now:
*„Ü5+1/3
The edited expression looks as follows:
SG49A.book Page 5 Friday, September 16, 2005 1:31 PM
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