Max/Min of Polynomial Functions

In summary, there are a few ways to find the max and min of a polynomial function without using calculus or the derivative test. For a quadratic function, you can complete the square. Some other special polynomials may also have similar tricks. If you are given the zeroes and their multiplicities, you can determine that the max and min are between the zeroes, but not much more. If you have a double zero, you can say that the value of x at that point is either a max or a min depending on the sign of the rest of the terms.
  • #1
ddrsakuramax
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Homework Statement


Does anyone know a possible equation or way to solve for the Max and Min of a Polynomial Function without Calculus or the Derivative test??


Homework Equations





The Attempt at a Solution

 
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  • #2
I do if it's a quadratic. Complete the square. You can do similar tricks with some other special polynomials. Otherwise it's using derivatives.
 
  • #3
What if you are given the zeroes and the multiplicity of the zeroes?
 
  • #4
It will tell you that the maxs and mins that aren't at zero are between the zeros, but it won't tell you much more about them. If you have, for example, a double zero at a, (x-a)^2 is a factor of the polynomial and you can say x=a is a max or a min depending on the sign of the rest of the terms, that is true.
 
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  • #5
ooo alright thanks a lot!
 

What are the key features of a polynomial function?

A polynomial function is a type of mathematical function that is defined by a single variable and consists of one or more terms. The key features of a polynomial function include its degree, leading coefficient, zeros, and end behavior.

What is the degree of a polynomial function?

The degree of a polynomial function is the highest exponent in the function. For example, in the function f(x) = 3x^2 + 2x + 1, the degree is 2.

How do you find the maximum or minimum value of a polynomial function?

The maximum or minimum value of a polynomial function can be found by using the concept of critical points, which are points where the derivative of the function is equal to 0. By finding the critical points and evaluating the function at those points, you can determine whether it is a maximum or minimum value.

What is the difference between a local and global maximum or minimum?

A local maximum or minimum is a point where the function reaches its highest or lowest value within a specific interval, while a global maximum or minimum is the highest or lowest value of the entire function. A global maximum or minimum can also be referred to as an absolute maximum or minimum.

How can you determine the end behavior of a polynomial function?

The end behavior of a polynomial function can be determined by looking at its degree and leading coefficient. If the degree is even and the leading coefficient is positive, the end behavior will rise on both ends. If the degree is even and the leading coefficient is negative, the end behavior will fall on both ends. If the degree is odd, the end behavior will rise on the left side and fall on the right side if the leading coefficient is positive, and vice versa if the leading coefficient is negative.

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