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Problem

Find the derivative of the function. $ F(t) = (3…

03:02

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Problem 19 Hard Difficulty

Find the derivative of the function.
$ h(t) = (t +1)^{2/3} (2t^2 - 1)^3 $


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00:38

Frank Lin

Related Courses

Calculus 1 / AB

Calculus: Early Transcendentals

Chapter 3

Differentiation Rules

Section 4

The Chain Rule

Related Topics

Derivatives

Differentiation

Discussion

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SA

Saher A.

October 9, 2021

not in the vid, in the text

SA

Saher A.

October 9, 2021

The answer written is wrong tho

SA

Saher A.

October 9, 2021

Best teacher on numerade hands down.

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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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Watch More Solved Questions in Chapter 3

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Problem 9
Problem 10
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Problem 13
Problem 14
Problem 15
Problem 16
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Problem 19
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Problem 24
Problem 25
Problem 26
Problem 27
Problem 28
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Problem 30
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Problem 35
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Problem 37
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Problem 39
Problem 40
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Problem 44
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Problem 46
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Problem 48
Problem 49
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Problem 88
Problem 89
Problem 90
Problem 91
Problem 92
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Problem 94
Problem 95
Problem 96
Problem 97
Problem 98
Problem 99
Problem 100

Video Transcript

Okay, so here's h of tea and we're going to find its derivative. And this problem eyes probably about one part calculus and three parts algebra. We're going to pay real close attention to detail here, So we have a product T plus one to the 2/3 is a factor, and two t squared minus one. Cubed is a factor. So we're going to use the product rule, which is the first times a derivative of the second plus the second time's a derivative of the first. So let's get going on that. So the first would be t plus one to the 2/3 the derivative of the second. We would use the chain rule here, bring down the three and raised to t squared minus one to the second power that takes care of the derivative of the outside and then multiplied by the derivative of the inside. The derivative of two T squared minus one would be four teeth. Okay, so so far, we have the first times the derivative of the second. Now we need plus the second to T squared, minus one cubed times the derivative of the first. And so we're going to use the chain rule on that as well. Bring down the 2/3 and raise T plus one to the negative 1/3 and then multiply by the derivative of T plus one, which is just one, so I won't write that. Okay, so we have the second times, the derivative of the first. Okay, now we want to see this answer as to terms. This is one term, and this is one term, and we want to look for what we can factor out of both terms. Okay, So one thing we notice is that we have a to t squared minus one, squared in one, cubed in the other so we can factor out to t squared minus one squared. Now, is there anything else we can factor out? Well, take a look At T plus one to the 2/3 and t plus one to the negative. 1/3. When we're factoring out, we always factor out the Wiest, the smallest of those and the smallest of those would be t plus one to the negative 1/3. So how do you factor that out of t plus one to the 2/3? So let's do that off to the side T plus one to the 2/3 is equal to t plus one to the negative 1/3 times. What? That's really the question T plus one to the what? So these exponents have to add to 2/3. So the one in the box here would be 3/3 or one so that the two exponents could add to 2/3. Okay, so if we factor t plus one to the negative 1/3 out, we're going to be leaving t plus one. So let's go back and right what we have left in the first term, all of that. What we have left is T plus one times three times 40. Now what do we have left in the second term? So we have factored out to t squared minus one squared. So we still have a to t squared minus one, and we still have a 2/3. Okay, Now let's see what we can do to simplify this third factor. So we're keeping the first factor. As it is. We're keeping the second factor as it is. And now suppose we distribute so we would have 12 tee times the quantity t plus one. So that's going to be 12 t squared plus 12 t and suppose we distribute the 2/3 so that's going to be 4/3 T squared, minus 2/3. Okay, so we have some, like, terms we can combine. The 12 t squared and the 4/3 t squared. All right, so here's the step we were just looking at. We're combining these like terms. And now for answer, we have to t squared minus one squared times T plus one to the negative 1/3 times when we had those, like terms, we get 43rd T squared plus 12 t minus 2/3. Okay, so you may or may not be required to do all that simplifying. As a matter of fact, when I looked at the answer in the book, I saw something very similar, with slightly less simplifying. I think it was something like for the third term. It was something like 2/3 times a quantity T, um, to t squared minus one plus 12 t times a quantity T plus one. So same equivalent last term. Compared to what I have just not simplified as much

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Calculus 1 / AB Courses

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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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