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anonymous
 one year ago
A company estimates its total profit (profit = total revenue minus total cost) as
P(x) = 2x^5 − 3x^4 − 5x^2 − 2, where P is in thousands of dollars and x is the number of years elapsed since the company was founded. How many times can the total profit become exactly zero? Hint: Use Descartes's rule of signs.
anonymous
 one year ago
A company estimates its total profit (profit = total revenue minus total cost) as P(x) = 2x^5 − 3x^4 − 5x^2 − 2, where P is in thousands of dollars and x is the number of years elapsed since the company was founded. How many times can the total profit become exactly zero? Hint: Use Descartes's rule of signs.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know the Descrates rule of signs

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The rule states that if the terms of a singlevariable polynomial with real coefficients are ordered by descending variable exponent, then the number of positive roots of the polynomial is either equal to the number of sign differences between consecutive nonzero coefficients, or is less than it by an even number. Multiple roots of the same value are counted separately.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How many sign changes are there in this polynomial P(x) = 2x^5 − 3x^4 − 5x^2 − 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0there is one sign change

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0P(x) = +2x^5 − 3x^4 − 5x^2 − 2 I see one sign change.
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