To find: solutions of the system of equations using the graphical method
Answer to Problem 40E
The solutions of the system of equations are
Explanation of Solution
Given:
Calculation:
Consider the system of equations,
Need to sketch the graph of the equations and find the intersect points.
Enter the equations in graphing calculator as follows.
Set the windows as follows.
To get the graph of the system of equations, press GRAPH button.
From the display, observe that the graphs of the equations intersect in quadrant I and quadrant II.
So the number of intersect points are 2.
Round to the two decimal places set the graphing calculator as follows,
Press MODE then set FLOAT up to 2 then press ENTER.
To find the intersect points press
After that, use the left and right buttons to confirm the first and second curves by pressing ENTER.
From the display, the intersect point is
Find the intersect point in the quadrant II as above.
From the display, the intersect point is
Therefore, the two intersect points are
Hence, the solutions of the system of equations are
Conclusion:
Hence, the solutions of the system of equations are
Chapter 10 Solutions
Precalculus: Mathematics for Calculus - 6th Edition
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