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Problem

Differentiate $ f $ and find the domain of $ f. $…

01:20

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Problem 27 Medium Difficulty

Differentiate $ f $ and find the domain of $ f. $

$ f(x) = \frac {x}{1 - \ln (x - 1)} $


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Doruk Isik
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01:51

Frank Lin

Related Courses

Calculus 1 / AB

Calculus: Early Transcendentals

Chapter 3

Differentiation Rules

Section 6

Derivatives of Logarithmic Functions

Related Topics

Derivatives

Differentiation

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Top Calculus 1 / AB Educators
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Lectures

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.

Video Thumbnail

44:57

Differentiation Rules - Overview

In mathematics, a differentiation rule is a rule for computing the derivative of a function in one variable. Many differentiation rules can be expressed as a product rule.

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Problem 51
Problem 52
Problem 53
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Problem 55
Problem 56

Video Transcript

In this problem were given a function that we're just to find derivative and the domain of this function. Let'S start from a derivative primefit we're going to use question to function. Derivative function in the numerator multiplied by function, denominator: minus functional, numerator, multiplied by derivative of the function in denominator, which is negative 4 over x, 11 divided by function in the denominator square, all right now, let's, since we have x ponent found in the denominator here, let's Divide and multiply the first term only numerator by x, minus 1, so we have x, minus 1 minus x minus 1 times natural lot x, minus 1 plus x, divided by x, minus 1 times 1 minus natural log of x minus 1 square. All right! We can then write the preservative f prime of x as 2 x, minus 1 minus x minus 1 times natural log of x, minus 1, divided by x, minus 1 times 1 minus, actually log of x minus 1 square. All right now we're going to decide on the domain. We know that, first of all, we have nental lot of x minus 1 in the denominator right here. We know that x, minus 1 can not be 0. It actually should be greater than 0 right. So it means that x should be greater than or this is the first condition. What else can we do? We also know that natural log of x, minus form should be, cannot be more so this cannot be equal to 1. Why? Because this is 1, we would get 0 in the denominator, and that would make the expansion of effects undefined. Since natural log of x, minus 1 cannot be 1. It means that x, minus 1 cannot be equal to e, so x cannot be equal to e plus 1 point. So then we're going to write the domain as first part is. We know that i should be greater than 1, so it will be between a and e plus 1 union plus 1 to positive infinity.

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Calculus: Early Transcendentals

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Related Topics

Derivatives

Differentiation

Top Calculus 1 / AB Educators
Grace He

Numerade Educator

Catherine Ross

Missouri State University

Kristen Karbon

University of Michigan - Ann Arbor

Joseph Lentino

Boston College

Calculus 1 / AB Courses

Lectures

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.

Video Thumbnail

44:57

Differentiation Rules - Overview

In mathematics, a differentiation rule is a rule for computing the derivative of a function in one variable. Many differentiation rules can be expressed as a product rule.

Join Course
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01:30

Differentiate $f$ and find the domain of $f$. $$f(x)=\frac{x}{1-\ln (x-1)}$$

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