Explanation Description: The given function is f ( x ) = 2 x 4 − 7 x 3 + 11 x 2 − 28 x + 12 . Find the point that graph of the function crosses the x -axis. That is, find the x -intercepts of the function. Use TI-83 calculator to sketch the graph of the function f ( x ) = 2 x 4 − 7 x 3 + 11 x 2 − 28 x + 12 as shown in below screenshot. Press the button “ Y = ” to access equation editor Y = and then write Y 1 = 2 X ^ 4 − 7 X ^ 3 + 11 X ^ 2 − 28 X + 12 . Now, set the viewing window size as follows. X min = − 5 , X max = 5 , and X s c l

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Chapter 15, Problem 56RE

To determine

The point such that the graph of the function f(x)=2x4−7x3+11x2−28x+12 crosses the x-axis.

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Chapter 15, Problem 55RE

Chapter 15, Problem 57RE

Chapter 15 Solutions

Basic Technical Mathematics

Ch. 15.1 - Use the factor theorem to determine whether t − 2...Ch. 15.1 - Prob. 2PE Ch. 15.1 - Prob. 3PE Ch. 15.1 - Prob. 4PE Ch. 15.1 - Prob. 1E Ch. 15.1 - Prob. 2E Ch. 15.1 - In Exercises 1–4, make the given changes in the...Ch. 15.1 - Prob. 4E Ch. 15.1 - Prob. 5E Ch. 15.1 - Prob. 6E

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