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BlueExorcistReaper
26.09.2019 •
Mathematics
3. stanley analyzes the table of values for a polynomial function. he has determined through applying descartes’ rule of sign that there is 1 negative real zero, and either 1 or 3 positive real zeros. he has also determined that the upper bound of the function is 3.
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Ответ:
A. The degree of the function is at least 4
B. At least 3 positive real zeros
Step-by-step explanation:
From the table we can see that the value of the polynomial function is first negative, then positive (1 intersection with x-axis), then again negative (second intersection with x-axis), then again positive (third intersection with x-axis), and at last again negative (fourth intersection with x-axis).
The point of intersection with x-axis corresponds to the zero of the function (f(x)=0). Since the graph of the function intersects 4 times the x-axis, the degree of the polynomial function is at least 4.
the first point of intersection with x-axis has negative x-coordinate. All other points have positive x-coordinates. This means the function has zt least 3 positive real zeros.
Ответ:
Because if you have 7 and then you add one that is 8 you could use your fingers if you’d like to:)