2.3 Polynomial Functions Filled In.notebook
Transcript of 2.3 Polynomial Functions Filled In.notebook
2.3 Polynomial Functions Filled In.notebook October 09, 2018
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2.3 Polynomial Functions
Objectives: 1) I can find the zeros of a polynmial function by factoring.
2) I can use a graph to locate zeros.
3) I can describe the end behavior of a function using limits.
4) I can determine the multiplicity of a zero.
5) I can sketch the graph of a polynomial function by finding zeros, multiplicity, and end behavior.
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Zeros
A zero is the value for "x" that makes .
Remember so zeros are where the graph touches the xaxis.
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Finding ZerosAlgebraically: 1) Factoring!!
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2) GraphicallyState the zeros of the function.
2.3 Polynomial Functions Filled In.notebook October 09, 2018
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Graphing Higher Order Polynomials
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End BehaviorLimit notation:
"As x approaches infinity/negative infinity, f(x), or y, approaches_______."
Look at graphs on previous slide.
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What is the degree of the following polynomials?
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The degree determines end behavior.
Odd degree:
Even degree:
positive negative
positive negative
2.3 Polynomial Functions Filled In.notebook October 09, 2018
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MultiplicityThe power of the factor determines the nature of the intersection at the point x = a. (This is referred to as the multiplicity.)
Straight intersection: (crosses straight...ly)(x a)1 The power of the zero is 1.
Tangent intersection : (bounces)(x a)even The power of the zero is even.
Inflection intersection: (crosses squiggggllly)(x a)oddThe power of the zero is odd.
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Find the zeros, the multiplicity, end behavior and graph the following.
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Find the zeros, the multiplicity, end behavior and graph the following
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