HP F2226A - 48GII Graphic Calculator User Manual page 813

Step A1
Step A3
Step A5
We notice the application of the hierarchy-of-operation rules in this selection.
First the y (Step A1). Then, y-3 (Step A2, parentheses). Then, (y-3)x (Step A3,
multiplication). Then (y-3)x+5, (Step A4, addition). Then, ((y-3)x+5)(x
(Step A5, multiplication), and finally, ((y-3)x+5)(x
division). It is important to point out that the multiplication in Step A5 includes
the first term, ((y-3)x+5) with a second term (x
calculated. To see the steps in calculating these second term, press the down
arrow key ˜, continuously, until the clear, editing cursor is triggered around
the y, once more. Then, press the right arrow key until these cursor is over the
x in the second term in the numerator. Then, press the upper-arrow key to
select this x. The steps in the evaluation of the expression, starting from this
point, are shown below:
Step A2
Step A4
Step A6
2
+4)/SIN(4x-2) (Step A6,
2
+4), which is already
2
+4)
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