CHAPTER 5
Calculator Notes for the TI-83 Plus and TI-84 Plus
Note 5A • Powers and Roots
Powers
The calculator has special keys for squaring, x , and raising to a power
of ⫺1, x (taking the reciprocal). The command for cubing is found
under MATH 3:3. You can find all powers, including these, by using the
“caret” key, ^ . If you raise a number to a fractional power, use
parentheses around the exponent.
2
⫺1
Roots
You can find the square root of a number by __pressing 2nd []. To find __
3
x
other roots, press MATH . The cube root is 4: ( and the x th __root is 5: .
x
For example, to find the fourth root of 47, press 4 MATH 5: 4 7 ENTER .
Note 5B • Drawing the Inverse of a Function
Your calculator can draw the inverse of any function. From the Home screen,
press 2nd [DRAW] 8:DrawInv, followed by an expression containing X or one
of the functions Y1 through Y0. Then press ENTER (not GRAPH ).
A drawing is overlaid on top of the Graph screen; it cannot be traced. If you
change the window or alter anything on the Y⫽ screen, the drawing will be
cleared. You can restore it by returning to the Home screen and pressing
ENTER again. To clear a drawing, press 2nd [DRAW] 1:ClrDraw.
Discovering Advanced Algebra Calculator Notes for the Texas Instruments TI-83 Plus and TI-84 Plus
CHAPTER 5
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TI-83 Plus and TI-84 Plus
Note 5C • Logarithms and Antilogs
Use LOG to find the common, or base 10, logarithm of any positive value.
Use 2nd [10x] for the common antilog of a number. Pressing 1 0 ^ (
gives the same result as pressing 2nd [10x].
Note 5D/App • Gathering Temperature Data Using the EasyData App
You will need a CBL2 (Calculator-Based Laboratory) and a temperature
probe.
Connect the CBL2 and the calculator. Plug the temperature probe into
Channel 1. Press APPS on the calculator and choose EasyData. After some
time, the app will recognize the temperature probe.
Press Setup ( WINDOW ), choose Time Graph, and press ENTER . Press Edit
( ZOOM ). Enter 10 for the time between samples and press Next, then enter 18
for the total number of samples and press Next. Press OK and then press Start.
Remove the temperature probe from the hot water or from your hand. After
the data collection is finished, press Main, press Quit, and press OK.
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CHAPTER 5
Discovering Advanced Algebra Calculator Notes for the Texas Instruments TI-83 Plus and TI-84 Plus
©2010 Kendall Hunt Publishing
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