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TI-83 Tutorial By Mr. Yoon
TI-83 for Grade 11 Math
2 usesa) Numerical Computation
b)Graphing
Main Buttons for Grade 11 Math
Numerical ComputationExample: Compute 1) 2*7 Step 1: Push 2 button
Step 2: Push MULTIPLY button
Step 3: Push 7 button
Step 4: Push Enter Button
Numerical Example #2Example: Compute:Step 1: Push “2nd” buttonStep 2:Push the “x²” button
Step 3: Push 4&9 buttons
Step 4: Push “)” button
Step 5: Push “Enter” button
Numerical Example #3ExampleCompute:Step 1: Push “(“ , “3” , “divide”, “4”, “)”
Step 2: Push “plus” button
Step 3: Push “(“ , “5” , “divide”, “8”, “)”Step 4: Push the “Enter” button
Converting Decimals to Fractions• Using the TI-83 we can convert decimals to
nice fractions.• From our last example
Push the “Math” button
Push “Enter”
• Finally Push “Enter” again
Graphing ExampleGraphing f(x)= 2x²-7x+3*If you want to graph a functionpress the “Y=” button
*You should get a screen that lookslike
*Enter 2x²-7x+3 into this screen
Graphing Example• Enter 2x²-7x+3 by pushing“2” , “Variable”, “x²”, “minus”,”7”. “Variable”
“plus”, “3”
Push “Graph”
Graphing Example: Changing the ViewWe can change the viewing window to get better viewPush the “Window” button
Change Xmin and XmaxXmin=-3Xmax=5(Use arrow keys and
clear buttons)
Hit the “Graph” Button
Solving the equation:2x²-7x+3=0
When setting f(x)=0 we are looking for the x-intercept or the zeros(roots)
(x-intercept , zero, root) (x-intercept , zero, root)
Finding the zeros(roots) using TI-83• Press “2nd” and “Trace” buttons
The screen should change to this..
Go to the zero option and hit Enter.
Finding the zeros(roots) using TI-83
The CPU is asking for a left bound. Move the “DOT” to the left side of one of the roots. Use the arrow keys to move the dot.
Finding the zeros(roots) using TI-83• Jjjj roots(zeros)
• (2 roots in this example) •
The dot is now on the left side of one of the roots. Push Enter.
The CPU is asking for a right boundMove the dot to the right side of root.
Finding the zeros(roots) using TI-83
• Kk (zero that we are trying to calculate)
The dot is now on the right side of the root. Push Enter.
The CPU is asking for a Guess? Push Enter again.
Finding the zeros(roots) using TI-83• The CPU has calculated one of
the roots to be 0.5
• Notice that the Y-Value =0.
Y=0 is the definition of a X-intercept.
Go find the other root.
Finding the zeros(roots) using TI-83
Here is the other root.