What are Local Maxima and Minima?

Local Maxima and Local Minima are the maximum and minimum value of the function relative to other points over a specific interval of the function. They are generally calculated in the same way we calculate Absolute maxima and minima. Local maxima and minima of any function can be similar or not similar to Absolute maxima and minima of the function.

Suppose we have a function f(x) = cos x defined on [-π, π] then is maximum value is 1 and its minimum value is -1 this is the local maxima and minima of the function. Now the function f(x) defined on R also has the maximum and minimum value of the function to be 1 and -1 this is absolute maxima and minima of the f(x). Here, we can see that local maxima and minima of the function are similar.

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Absolute Minima and Maxima

Absolute Maxima and Minima are the maximum and minimum values of the function defined on a fixed interval. A function in general can have high values or low values as we move along the function. The maximum value of the function in any interval is called the maxima and the minimum value of the function is called the minima. These maxima and minima if defined on the whole functions are called the Absolute Maxima and Absolute Minima of the function.

In this article, we will learn about Absolute Maxima and Mimima, How to calculate absolute maxima and minima, their examples, and others in detail.

Table of Content

  • What are Absolute Maxima and Minima?
  • Critical Points and Extrema Value Theorem
  • Extrema Value Theorem
  • Absolute Minima and Maxima in Closed Interval
  • Absolute Minima and Maxima in Entire Domain
  • What are Local Maxima and Minima?

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What are Absolute Maxima and Minima?

Absolute maxima and minima are the maximum and minimum values of the function on the entire given range. Absolute Maxima and Minima are also called the global maxima and minima of the function it is the maximum and the minimum value that the function can achieve in its entire domain. Suppose we are given a function f(x) = sin x, defined on the interval R then we know that, -1 ≤ sin x ≤ 1...

Critical Points and Extrema Value Theorem

Let’s say we have a function f(x), critical points are the points where the derivative of the function becomes zero. These points can either be maxima or minima. A critical point is minima or maxima is determined by the second derivative test. Since there can be more than one point where the derivative of the function is zero, more than minima or maxima is possible. The figure below shows a function that has multiple critical points....

Extrema Value Theorem

Extrema value theorem guarantees both the maxima and minima for a function under certain conditions. This theorem does not tell us where the extreme points will exist, this theorem tells us only that extreme value will exist. The theorem states that,...

Absolute Minima and Maxima in Closed Interval

Now to find the extreme points in any interval, we need to follow some basic steps. Let’s say we have a function f(x) and a region D. We want to find the extreme value of the function in this interval....

Absolute Minima and Maxima in Entire Domain

Absolute minimum and maximum values of the function in the entire domain are the highest and lowest value of the function wherever it is defined. A function can have both maximum and minimum values, either one of them or neither of them. For example, a straight line extends up to infinity in both directions so it neither has a maximum value nor minimum value....

What are Local Maxima and Minima?

Local Maxima and Local Minima are the maximum and minimum value of the function relative to other points over a specific interval of the function. They are generally calculated in the same way we calculate Absolute maxima and minima. Local maxima and minima of any function can be similar or not similar to Absolute maxima and minima of the function....

Solved Examples of Absolute Maxima and Minima

Let’s see some examples on Absolute Maxima and Minima to better understand the concept of Absolute Maxima and Minima...

Practice Questions on Absolute Maxima and Minima

Q1: Find the absolute extreme points of a function f(x) = 2x3 – 3x2 + 5 in the interval [-2, 2]...

FAQs on Absolute Maxima and Minima

1. What is Absolute Maxima of the Function?...

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