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Using a TI-83/TI-84 Graphing Utility:
I.
Find and store the roots/zeros of
Graph Y
=
1
Zoom 6 for the standard window... [-10, 10]
Zoom Out (Zoom 3 ENTER) to view the other root.
Find the left root:
Press 2
Left Bound?
Right Bound?
Guess?
Store left root as A:
Press 2
Press X,T, θ ,n STO
Find the right root:
Press 2
Left Bound?
Right Bound?
Guess?
Store right root as B:
Press 2
Press X,T, θ ,n STO
2
f x
( )
=
x
f x
2
x
−
12
x
+
3
.
nd
TRACE 2: zero.
Press ENTER on
Move cursor to the right to get a negative y-coordinate.
Press ENTER on
Press ENTER.
nd
MODE (to QUIT GRAPH screen and view HOME screen).
ALPHA A ENTER.
nd
TRACE 2: zero.
Move cursor to the right to get a negative y-coordinate.
Press ENTER on
Move cursor to the right to get a positive y-coordinate.
Press ENTER on
Press ENTER.
nd
MODE (to QUIT GRAPH screen and view HOME screen).
ALPHA B ENTER.
−
12
x
+
3
has roots/zeros at approximately (0.225, 0) and (11.745, 0) .
2
( )
=
x
−
12
x
+
3
x [-10, 10]
1
=
0
= .
3
x
y
x
=
.85106383
11.06383
x
=
11.914894
x
=
.
.
1
y
= −
6.488456
.
7.357628
.
y
= −
1.9859665
.
y
=
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Table of Contents
Related Manuals for Texas Instruments TI-83
Summary of Contents for Texas Instruments TI-83
- Page 1 Using a TI-83/TI-84 Graphing Utility: Find and store the roots/zeros of − Graph Y − Zoom 6 for the standard window… [-10, 10] x [-10, 10] Zoom Out (Zoom 3 ENTER) to view the other root. Find the left root: Press 2 TRACE 2: zero.
- Page 2 Calculate A – B. A – B ≈ -11.48912529 or A – B ≈ -11.489 NOTE: If you used the rounded values to compute the new problem, you would get A – B ≈ -11.49…. which is incorrect! Find and store the intersections of cos( ) −...
- Page 3 Find the right intersection point: Press 2 TRACE 5: intersect. First Curve? Move cursor right closer to the right point of intersection. Press ENTER . Second Curve? Press ENTER. Guess? Press ENTER. Store right x-coordinate as B: Press 2 MODE (to QUIT GRAPH screen and view HOME screen). Press X,T, θ...
- Page 4 Find maximum and minimum values of − − − Graph Y − − − Zoom 6 for the standard window… [-10, 10] x [-10, 10] Find the maximum value of − − − Press 2 TRACE 4: maximum. Left Bound? Move cursor to the left to get a y-coordinate that is less than the relative max.
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