If f is a polynomial of degree 3 or more how would you
use real zeros...
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If f is a polynomial of degree 3 or more how would youuse real zeros of f to determine the open intervals overwhich f(x) > 0 or f(x) < 0. How and where does the sign off change.
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The sign of a graph change at its zeros It is known thatbetween any two consecutive zeros of a polynomial the sign of thepolynomial remains the same that is it remains either negative orpositive The reason is
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