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anonymous
 4 years ago
Describe how you would analyze the zeros of the polynomial function f(x) = 3x5  8x4 +25x3  8x2 +x  19 using Descartes' Rule of Signs and include the answer.
anonymous
 4 years ago
Describe how you would analyze the zeros of the polynomial function f(x) = 3x5  8x4 +25x3  8x2 +x  19 using Descartes' Rule of Signs and include the answer.

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amistre64
 4 years ago
Best ResponseYou've already chosen the best response.2the Drule is to count sign (operation) changes for f(x) and f(x)

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.2f(x) = 3x5  8x4 +25x3  8x2 +x  19 1  1  1  1 0  4 sign chagnes in f(x) there are: 4, 2 or 0 positive zeros

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.2f(x) = 3x5  8x4 25x3  8x2 x  19 1  0  there is 1 sign change for f(x); there is at least 1 negative zero

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.2since a zero can be a complex value; and complexes come in pairs; we count the real values down by 2s
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