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(a) Sketch the graph of the function $ f(x) = x |…

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Problem 60 Hard Difficulty

Where is the greatest integer function $ f(x) = [ x ] $ not differentiable? Find a formula for $ f' $ and sketch its graph.


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Daniel Jaimes

Related Courses

Calculus 1 / AB

Calculus: Early Transcendentals

Chapter 2

Limits and Derivatives

Section 8

The Derivative as a Function

Related Topics

Limits

Derivatives

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Top Calculus 1 / AB Educators
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Lectures

Video Thumbnail

04:40

Limits - Intro

In mathematics, the limit of a function is the value that the function gets very close to as the input approaches some value. Thus, it is referred to as the function value or output value.

Video Thumbnail

04:40

Derivatives - Intro

In mathematics, a derivative is a measure of how a function changes as its input changes. Loosely speaking, a derivative can be thought of as how much one quantity is changing in response to changes in some other quantity; for example, the derivative of the position of a moving object with respect to time is the object's velocity. The concept of a derivative developed as a way to measure the steepness of a curve; the concept was ultimately generalized and now "derivative" is often used to refer to the relationship between two variables, independent and dependent, and to various related notions, such as the differential.

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Video Transcript

let's talk about this question. It seems that where is the greatest indigent function? Not the friendship. So in the best way to answer this is by drawing the graph of the greatest indigent function. This is the coordinate access. And I'm gonna just brought up the indigenous here. So this is zero one, two, three and so on. Uh this is -1 -2 -3 -4 and so on. Over here we have one, two, 34. Uh and over here we have -1 -2 and so on. So between 0-1, between 0-1, The functional value of zero From 1 to 2, The functional value is one from 2 to 3. From 2 to 3. The functional value is two and so on. From -1-0, There's zero. The open circle means the start improving values -1 From -2 to -1, the values -2 and so on. Clearly we can see that it has a jump discontinuity at each integral value at each integral value. It has a jump kind of discontinuity so it is not differentiable at all those points. So we're going to say that it is not differentiate able at all integral whites. And saying that find the formula for the f dash and sketches craft clearly the derivative whatever the function and this function is always a constant because function between uh function between 0 to 10 function between 1 to 2 as one function between 2 to 3 uh is two and so on. Uh So wherever the functional value it gets a functional value that's a constant. Because function is uh let's call it minus two for x. Between minus two to minus one, it's minus one for x. Between minus one and 00 for X between 10 and one. It's one for X, between one and two and so on. So whenever we will take the derivative the derivative of a constant is always zero. So we're gonna see that if dash X is always zero, definitely excluding the integral points because that's where the function is different. She able and if we have to draw the graph of uh Everyday Acts Equal to zero. So why equal to zero is just the X. Axis Except the integral value. So this is how it's gonna graph is gonna look like. So we'll just make a draw the plot the integral values and we're gonna draw holes over here. So that is a whole this is a whole, this is a whole, this is a whole and so on. This is how the graph of F dash X is going to look like because F dash X is always zero. Thank you

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Related Topics

Limits

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Top Calculus 1 / AB Educators
Grace He

Numerade Educator

Kayleah Tsai

Harvey Mudd College

Kristen Karbon

University of Michigan - Ann Arbor

Michael Jacobsen

Idaho State University

Calculus 1 / AB Courses

Lectures

Video Thumbnail

04:40

Limits - Intro

In mathematics, the limit of a function is the value that the function gets very close to as the input approaches some value. Thus, it is referred to as the function value or output value.

Video Thumbnail

04:40

Derivatives - Intro

In mathematics, a derivative is a measure of how a function changes as its input changes. Loosely speaking, a derivative can be thought of as how much one quantity is changing in response to changes in some other quantity; for example, the derivative of the position of a moving object with respect to time is the object's velocity. The concept of a derivative developed as a way to measure the steepness of a curve; the concept was ultimately generalized and now "derivative" is often used to refer to the relationship between two variables, independent and dependent, and to various related notions, such as the differential.

Join Course
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