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Leni [432]
4 years ago
14

How to evaluate polynomial function

Mathematics
1 answer:
Katen [24]4 years ago
7 0

Answer:

"Evaluation" mostly means "simplifying an expression down to a single numerical value". Sometimes you will be given a numerical expression, where all you have to do is simplify; that is more of an order-of-operations kind of question

example: So let we are given a polynomial function as:

f(x)=x^4+3x^3-x^2+6  and we are aksed to evaluate this polynomial at  x=-3

Then the value of the polynomial will be:

f(-3)=(-3)^4+3\times (-3)^3-(-3)^2+6\\\\f(-3)=81+3\times (-27)-9+6\\\\f(-3)=81-81-9+6\\\\f(-3)=-3

Hence on evaluating the polynomial function f(x) at x=-3 we get the value of the polynomial function as -3.

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<h2>Explanation:</h2>

Hello! Remember you have to write complete questions in order to get good and exact answers. Here I'll assume the graphed function comes from:

f(x)=\left(x-4\right)^{2}+5

So this is the equation of a parabola that opens upward and whose vertex lies on the point:

V(4,5)

The graph of this function is shown below. Which is true regarding the graphed function f(x)?

  • It is true that the domain is the set of all real numbers because this is a polynomial function.

  • It is true that the range is the set of all real numbers such that y ≥ 5

  • It is true that this parabola opens upward

  • It is true that it doesn't cut the x-axis

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3 years ago
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MArishka [77]

Answer:

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Step-by-step explanation:

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A. -\frac{1}{2}

Step-by-step explanation:

Each mark represent 0.1 unit, so if you count from 0 to n you get 0.5 that is exactly the same that -\frac{1}{2} (for convention the left of the 0 is taken as negative and the right as positive).

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