hp40g+.book Page 6 Friday, December 9, 2005 1:03 AM
this case, you have to press 
to select elements in the expression.
The following illustration shows how an expression can be viewed as a tree in the Equation Writer. It illustrates a tree view of the expression:
(5x + 3) ⋅ (x – 1)
x+ 3
÷
×+
+ | – |
×
Suppose that the cursor is positioned to the right of 3:
•If you press 
once, the 3 component is selected.
•If you press 
again, the selection moves up the tree, with x + 3 now selected.
•If you press 
again, the selection moves up the tree, and now the entire expression is selected.
•If you had pressed 
instead of 
when the cursor was positioned to the right of 3, the leaves of the branch get selected (that is, x + 3).
•If you press 
again, the selection moves up the tree, and now the entire expression is selected.
•If you now press 
, just the numerator is selected.
•If you now press 
again, the
•Continue pressing 
to select each
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