In Example 6, change the coefficient of x 2 to 25. Data from Example 6 Graphically solve
Question:
In Example 6, change the coefficient of x2 to 25.
Data from Example 6
Graphically solve the system of equations:
Solving the first equation for y, we have
Because this is an ellipse, as shown in Example 3, its domain extends from x = −2 to x = 2 (9x2 cannot be greater than 36). The exponential curve cannot be negative and increases rapidly, as discussed in Chapter 13. This means we need only graph the upper part of the ellipse (using the + sign). Therefore, we choose the window settings as shown in the calculator display in Fig. 14.7. Using the intersection feature, we find the approximate solutions of x = −2.00, y = 0.11 and x = 0.90, y = 2.68.
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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