Find the derivative of the following using the three-step rule Зх-1 1. у3D 2x+5 2. y=Va² +x²

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
icon
Related questions
Question

Please answer the no.2 only. You have to solve like sample picture:

 

Find the derivative of the following using the three-step rule
Зx-1
1. у3
2x+5
2. y=Va² +x?
Transcribed Image Text:Find the derivative of the following using the three-step rule Зx-1 1. у3 2x+5 2. y=Va² +x?
-3-1
EXAMPLE 3.1.2 Find the derivative of y = x3. Using the formula, y' = -3x
-3x-4.
Here is the general computation. Suppose n is a negative integer; the algebra is easier
to follow if we use n = -m in the computation, where m is a positive integer.
d
d
-m
(л + Дл) -т —
= lim
Ar→0
dx
dx
Ax
1
1.
(r+Ax)m
lim
Ar→0
Ax
2т — (х + Дх)т
= lim
Ar→0 (x + Ax)mxm Ax
m
-
xm – (xm + mxm-1Ax + a2x"-2Ax² + . .
(x + Ax)mxmAx
+ am-1xAx™-1 + Aæ™)
...
lim
Ar→0
-mxm-
a2xm-2Ax
am-1xAx™-2 – Aa™-1)
...
lim
Ar-0
(x+ Ax)mxm
-mx
m-1
-mxm-1
= -mx'
,т-1-2т
= nx
-m-1
nx"-1
xm xm
x2m
Transcribed Image Text:-3-1 EXAMPLE 3.1.2 Find the derivative of y = x3. Using the formula, y' = -3x -3x-4. Here is the general computation. Suppose n is a negative integer; the algebra is easier to follow if we use n = -m in the computation, where m is a positive integer. d d -m (л + Дл) -т — = lim Ar→0 dx dx Ax 1 1. (r+Ax)m lim Ar→0 Ax 2т — (х + Дх)т = lim Ar→0 (x + Ax)mxm Ax m - xm – (xm + mxm-1Ax + a2x"-2Ax² + . . (x + Ax)mxmAx + am-1xAx™-1 + Aæ™) ... lim Ar→0 -mxm- a2xm-2Ax am-1xAx™-2 – Aa™-1) ... lim Ar-0 (x+ Ax)mxm -mx m-1 -mxm-1 = -mx' ,т-1-2т = nx -m-1 nx"-1 xm xm x2m
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Recommended textbooks for you
Calculus: Early Transcendentals
Calculus: Early Transcendentals
Calculus
ISBN:
9781285741550
Author:
James Stewart
Publisher:
Cengage Learning
Thomas' Calculus (14th Edition)
Thomas' Calculus (14th Edition)
Calculus
ISBN:
9780134438986
Author:
Joel R. Hass, Christopher E. Heil, Maurice D. Weir
Publisher:
PEARSON
Calculus: Early Transcendentals (3rd Edition)
Calculus: Early Transcendentals (3rd Edition)
Calculus
ISBN:
9780134763644
Author:
William L. Briggs, Lyle Cochran, Bernard Gillett, Eric Schulz
Publisher:
PEARSON
Calculus: Early Transcendentals
Calculus: Early Transcendentals
Calculus
ISBN:
9781319050740
Author:
Jon Rogawski, Colin Adams, Robert Franzosa
Publisher:
W. H. Freeman
Precalculus
Precalculus
Calculus
ISBN:
9780135189405
Author:
Michael Sullivan
Publisher:
PEARSON
Calculus: Early Transcendental Functions
Calculus: Early Transcendental Functions
Calculus
ISBN:
9781337552516
Author:
Ron Larson, Bruce H. Edwards
Publisher:
Cengage Learning