Exploring Polynomial Functions and Complex Zeros

The video tutorial covers complex zeros, including real and imaginary numbers, and their role in polynomials. It explains how to factor polynomials to find zeros and x-intercepts, and discusses the concept of multiplicity and its impact on graph behavior. The tutorial also explores non-real zeros and their conjugate pairs, and demonstrates how to use successive differences to determine the degree of a polynomial.

What is a zero or root of a polynomial function?

• A value that makes the function output zero

• A value that makes the function output negative

• A value that makes the function output infinity

• A value that makes the function output one

Tags

CCSS.HSF-IF.C.7C

What is the x-intercept of a function?

• Where the function crosses the y-axis

• Where the function has a minimum

• Where the function crosses the x-axis

• Where the function has a maximum

What is the zero product property?

• A property that states a product of factors is zero if the difference of the factors is zero

• A property that states a product of factors is zero if the sum of the factors is zero

• A property that states a product of factors is zero if all factors are non-zero

• A property that states a product of factors is zero if at least one of the factors is zero

Tags

CCSS.HSA-REI.B.4B

How do you determine the intervals where a polynomial is greater than or equal to zero?

• By finding the minimum points and analyzing the sign of the polynomial in each interval

• By finding the x-intercepts and analyzing the sign of the polynomial in each interval

• By finding the y-intercepts and analyzing the sign of the polynomial in each interval

• By finding the maximum points and analyzing the sign of the polynomial in each interval

What does it mean if a root has even multiplicity?

• The graph will have a minimum at that root

• The graph will have a maximum at that root

• The graph will bounce off the x-axis at that root

• The graph will cross the x-axis at that root

What is the behavior of a polynomial function at a root with odd multiplicity?

• The graph will have a minimum at that root

• The graph will have a maximum at that root

• The graph will bounce off the x-axis at that root

• The graph will cross the x-axis at that root

How many non-real zeros can a polynomial of degree n have?

• Any number of non-real zeros

• No non-real zeros

• An odd number of non-real zeros

• An even number of non-real zeros

Tags

CCSS.HSN.CN.C.9

What is the conjugate of a non-real zero a + bi?

• a + b

• a - b

• a - bi

• a + bi

Tags

CCSS.HSN.CN.A.3

What is the degree of a polynomial if the third differences are constant?

• 1

• 2

• 3

• 4

Tags

CCSS.8.EE.C.7B

What must be true about the input values for the successive differences method to work?

• They must be in decreasing order

• They must be in random order

• They must be in equal intervals

• They must be in increasing order