Function Tables - Sharp EL-531RH Teachers Manual

Function Tables

• • • • • • • • • • • • • • • • • • • • • Objective • • • • • • • • • • • • • • • • • • • • •
Understand and use calculator functions.
Understand and apply functional relationships.
Enable speedy plotting of graphs.
• • • • • • • • • • • • • • • Explanation of the activity • • • • • • • • • • • • • •
Use the calculator to calculate the y values for a given function using a set range of values for x.
Record the values on a table and use them to plot a graph.
• • • • • • • • • • • • • • • • • Using the calculator • • • • • • • • • • • • • • • • •
Calculator functions used: Multiplication, editing, Multi-line Playback
Press the following buttons and then start operation.
Enter the y values for the function y = 4x - 5 using the values from -5 to +5 for x.
Use the calculator's playback function to calculate the functions efficiently. After calcu-
lating the values, use them to plot the graph of y = 4x - 5.
4 5
4
In the same way, find the values for
x = -3, -2, 1, 0,...5.
Each press of a
one calculation step forward or backward.
Display the first calcualtion with
5
key takes you
26
Junior high school
x -5 -4 -3 -2 -1
y -25 -21 -17 -13 -9
DEG
4X(-5)-5=
DEG
4X(-5)-5=
DEG
4X(-4)-5=
DEG
4X(-4)-5=
DEG
4X(-5)-5=
DEG
4X(-4)-5=
DEG
4X(4)-5=
DEG
4X(5)-5=
... 5
... 15