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 one year ago
What are the possible number of positive, negative, and complex zeros of f(x) = 3x^4  5x^3  x^2  8x + 4 ?
 one year ago
What are the possible number of positive, negative, and complex zeros of f(x) = 3x^4  5x^3  x^2  8x + 4 ?

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.Sam.
 one year ago
Best ResponseYou've already chosen the best response.1Well, if they just want the number of roots, then it will be a total of 4 , 2 complex, 2 reals

DeadShot
 one year ago
Best ResponseYou've already chosen the best response.0My teacher wants the possible number of positive real, negative real, and complex. Knowing that there are 2 complex zeroes narrows down the answer.

DeadShot
 one year ago
Best ResponseYou've already chosen the best response.0Is the number of positive real 3 or 1 and the negative 1, or is it vice versa?

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.1Then apply Descartes' Rule, have you learn that before?

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.1I have to go now, there's a tutorial on that here: http://www.purplemath.com/modules/drofsign.htm Try it out :)
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