Sharp EL-9650 - Page 39

EL-9650/9600c/9450/9400 Graphing Calculator
NotesStep & Key Operation
(When using EL-9650/9600c)
*Use either pen touch or cursor to operate.
Display
(When using EL-9650/9600c)
y = |x| changes to y = |x-2|
2 - 1
Move the original graph to the right
by 2.
* *
3 - 1
Access the Change feature.
*
2 -2
Save the new graph and look at the
relationship of the function and the
graph.
* *
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
3 - 2
Select y = |x|.
*
3 - 3
Make the slope of the graph steeper.
Save the new graph.
y = |x|➞ y = 2|x|
3 - 4
Make the slope of the graph minus.
Save the new graph.
y = |x|➞ y = - |x|
3 - 5
Look at the relationship of the
function and the graph.
* * *
Notice that the coefficient a
in the standard form
y = a |x - h| + k takes
charge of changing the slope.
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
EL-9650/9600c/9450/9400 shows absolute values with | |, just as written on paper, by
using the Equation editor. Use of the calculator allows various absolute value functions
to be graphed quickly and shows their characteristics in an easy-to-understand manner.
The Shift/Change feature of the EL-9650/9600c/9450/9400 allows visual understanding
of how graph changes affect the form of absolute value functions.
Notice that the function h in
the standard form
y = a|x - h|+
k takes charge
of horizontal movement of
the graph.
8-2
ALPHA
ENTER
ENTER
ENTER
ENTER
3
2nd F SHIFT/CHANGE B
ENTER
ENTER
ALPHA
ALPHA