Asked by Juan
Use descartes rule of signs
H(x)=2x^3+5x^2-31x-15
H(x)=2x^3+5x^2-31x-15
Answers
Answered by
oobleck
AAAaannndd the bot gets it wrong yet again!
you clearly do not know how to count sign changes.
H(x) has one sign change, from + to - at: +5x^2-31x
H(-x) has two sign changes,
from - to + at: -2x^3 + 5x^2
from + to - at: + 31x - 15
In fact, H(x) has
1 positive and 2 negative roots
you clearly do not know how to count sign changes.
H(x) has one sign change, from + to - at: +5x^2-31x
H(-x) has two sign changes,
from - to + at: -2x^3 + 5x^2
from + to - at: + 31x - 15
In fact, H(x) has
1 positive and 2 negative roots
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