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Using a graphing calculator to solve functions

arl2267

New member
Nov 6, 2012
15
Consider the function:

f(x)= x7-4x5-3x4+4x3+12x2-12/x7

a) Graph the function on [-6,6] by [-6,6]. From your graph, estimate how many x-intercepts the function has and what values they 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 part a and b what advice would you give a friend using a graphing calculator to find x-intercepts?

I'm not even sure where to start with this problem. Just looking at part b gives me a headache and I have no idea what I'm doing. Any help would be greatly appreciated. Thanks.
 

Ackbach

Indicium Physicus
Staff member
Jan 26, 2012
4,192
What model calculator do you have? Do you know how to adjust viewing windows on your model?