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First, we need to highlight the entire first term by using either the right
arrow (
™) or the upper arrow (—) keys, repeatedly, until the entire
expression is highlighted, i.e., seven times, producing:
Once the expression is highlighted as shown above, type +1/
3
to add the fraction 1/3. Resulting in:
Creating algebraic expressions
An algebraic expression is very similar to an arithmetic expression, except
that English and Greek letters may be included. The process of creating
an algebraic expression, therefore, follows the same idea as that of
creating an arithmetic expression, except that use of the alphabetic
keyboard is included.
To illustrate the use of the Equation Writer to enter an algebraic equation
we will use the following example. Suppose that we want to enter the
expression:
Use the following keystrokes:
2/R3™™*~‚n+„¸\~‚m
™™*‚¹~„x+2*~‚m*~‚c
NOTE: Alternatively, from the original position of the cursor (to the
right of the 2 in the denominator of π
2
/2), we can use the keystroke
combination ‚—, interpreted as (‚ ‘ ).
⎟
⎠
⎞
⎜
⎝
⎛
∆⋅+
⋅+
−
3/1
2
3
2
θ
µ
λ
µ
yx
LNe
SG49A.book Page 7 Friday, September 16, 2005 1:31 PM