Question

MEDAL+FAN
CAN SOMEONE PLEASE HELP ME

Answer 1

Using complete sentences, describe how you would analyze the zeros of the polynomial function f(x) = 3x5 8x4 +25x3 8x2 +x 19 using Descartes Rule of Signs.

Be sure to provide the answer in your explanation

Answer 2

a good example and explanation of descartes rule of sign is found here
http://www.purplemath.com/modules/drofsign.htm

Answer 3

You need to count the "changes in sign of" \[f(x) =3x^5+8x^4+25x^3+8x^2+x+19\]

Answer 4

meaning the changes in sign of the coefficients
the coefficients are 3,8,25,8,1,19 and there are 4 changes in sign
from 8 to 25, from 25 to 8, from 8 to 1 and from 1 to 19

Answer 5

this tells you that there are at most 4 positive real zeros, and you count down by 2s, meaning that there are either 4, 2 or 0 positive real zeros for this polynomial

Answer 6

Okay

Answer 7

Got it?

Answer 8

Yes Thank You So Much

Answer 9

The Explanation Really Help .

Answer 10

No problem!:) Glad to help you:)