Consider the function defined by a Graph the function on 6, 6 by 6, 6 From your graph, estimate how many x intercepts the function has and what their values are b Now graph the function on 1 5, 1 4 by 10 4 , 10 4 and on 1 4, 1 5 by 10 5 10 5 From your graphs, estimate how many x intercepts the function has and what their values are c From your results in parts a and b, what advice would you give a friend on using a graphing calculator to find x intercepts f(x) x 4x 3x4 4x 12x 12 7 X x7

Question: Consider the function defined by a. Graph the function on [6, 6] by [6, 6] From your graph, estimate how many x-intercepts the function has

Consider the function defined by

f(x) x - 4x 3x4 + 4x + 12x - 12 7

a. Graph the function on [−6, 6] by [−6, 6] From your graph, estimate how many x-intercepts the function has and what their values are.

b. Now graph the function on [−1.5, −1.4] by [−10⁻⁴, 10⁻⁴] and on [1.4, 1.5] by [−10⁻⁵. 10⁻⁵] From your graphs, estimate how many x-intercepts the function has and what their values are.

c. From your results in parts a and b, what advice would you give a friend on using a graphing calculator to find x-intercepts?

f(x) x - 4x 3x4 + 4x + 12x - 12 7 X - x7

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