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Problem

(a) Graph the function $ f(x) = \sin x - \frac{1}…

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Problem 60 Hard Difficulty

Determine whether $ f'(0) $ exists.

$ f(x) = \left\{
\begin{array}{ll}
x^2 \sin \frac{1}{x} & \mbox{if $ x \neq 0 $}\\
0 & \mbox{if $ x = 0 $}
\end{array} \right.$


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03:46

Daniel Jaimes

Related Courses

Calculus 1 / AB

Calculus: Early Transcendentals

Chapter 2

Limits and Derivatives

Section 7

Derivatives and Rates of Change

Related Topics

Limits

Derivatives

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Top Calculus 1 / AB Educators
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Anna Marie Vagnozzi

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Heather Zimmers

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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

we have a question in which we need to get a mind whether actors directors are not. So we have effects which is equal to access squired sign one by X. When X is not equal to zero and zero of annex equal to zero. Okay, so we need to find um we need to differentiate first and we need to find left and innovative. So if differentiation if derivative exists so left and derivatives should be able to write and innovative. So left and derivative will be Limit. X approaches to zero from left side, affects minus, affects minus f zero by x minus zero. 40 by X zero. No, if you convert it into which it will become Limit accidents to zero F zero minus set plus f zero by zero minus at minus zero, 0- at minus F zero x 0- set minus zero as we are approaching X from the left side. Okay, so this is Limit at approaches to zero. F off minus set -F of zero, divided by minus that. So let us plug in the value in the function at approaches to zero F minus set is minus that whole square Sign -1 by H zero because 0 is zero. My mindset. So this will become limited accidents to zero at a square Sign -1 by H by -H. So I wanted to and actually get canceled out. We'll be getting and one more thing sign of any negative number sign -1 battled mind sign it. So this limit as approaches to 0- at sign But one by H Divide by- at -1. Yeah. Okay so finally we'll be getting at sign one batch now if that approaches to zero. Uh So this will become zero into Sign one by H. So we know that range of signage. A range of sine function is always -1-1. So any value of one batch will give us between any number between -1-1. So this is zero. So left unlimited zero similarly right different derivatives right And elevating will be limit at approaches to zero from right side, F X -F0 By X zero. So this will be limit. Sorry here actually approaching 20 limit Such approaches to zero, plus H minus f zero but express edge. Uh It should not be a plus at it should be zero plus at Yeah. Okay. Zero blacks. Okay in the denominator it should be zero plus eight minus zero. Triple A. Search zero. So this will be a limit. That approach is 20 F h minus F zero by H. Now plugging in the function Limited approaches to zero and 2 square sign one by it and F 00. So let it be much. Now again this will tend to zero and this will tend Any value between my 1-10. So we can see that left and derivative equal to write and debating hands. The limit exists. Thank you him limited. Very very big. Sorry, thank you.

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Calculus: Early Transcendentals

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Related Topics

Limits

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Top Calculus 1 / AB Educators
Grace He

Numerade Educator

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Joseph Lentino

Boston College

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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.

Join Course
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