The function p(x) is a polynomial. If p(–9)=–10 and p(–2)=–7, can you conclude that p(x) is ever equal to 0?
Question
The function p(x) is a polynomial. If
p(–9) = –10
p(–2) = –7
can you conclude that p(x) is ever equal to 0 ?
Solution
To determine whether the polynomial function is ever equal to 0 given the values and , we can analyze the implications of these values.
1. Analyze Provided Values
We know:
Both results are negative.
2. Continuous Nature of Polynomials
Polynomials are continuous functions, meaning that they do not have gaps or jumps in their values. If a polynomial takes a negative value at two different points, it's possible that it could cross the x-axis (where ) depending on the nature of the polynomial.
3. Intermediate Value Theorem
According to the Intermediate Value Theorem, if a continuous function takes on two values of opposite sign around an interval, it must cross zero at least once in that interval. Since and are both negative, we conclude that there is no guarantee for a root between these points.
Conclusion
Based on the information provided, we cannot conclude that is equal to 0 at any point; in fact, the values given suggest that is negative within that interval.
Final Answer
No, we cannot conclude that is ever equal to 0 given that both and are negative.
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