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Suppose that you want to replace the quantity between parentheses in the
denominator (i.e., 5+1/3) with (5+
π
2
/2). First, we use the delete key
(
ƒ) delete the current 1/3 expression, and then we replace that fraction
with
π
2
/2, as follows:
ƒƒƒ„ìQ2
When hit this point the screen looks as follows:
In order to insert the denominator 2 in the expression, we need to highlight
the entire
π
2
expression. We do this by pressing the right arrow key (™)
once. At that point, we enter the following keystrokes:
/2
The expression now looks as follows:
Suppose that now you want to add the fraction 1/3 to this entire
expression, i.e., you want to enter the expression:
3
1
)
2
5(25
5
2
+
+⋅+
π
SG49A.book Page 6 Friday, September 16, 2005 1:31 PM