Expand the function p (z + h) as follows. p (z + h) = V(w+h)²–1 Substitute the function p (z + h) in equation (1). (w+h)2 –1 p = limh¬0 h (w²_ /(w+h)² –1 limh¬0 = h/(w+h)²_1 (w² –1) (w²–1)-/(w+h)²–1)(/ (w²- (w+h)? – -1 = limh¬0 h/(w+h)²–1\/ (w²–1) (w²–1)-/(w+h)²–1 w²–1-(w²+2wh+h?–1) = lim½¬0 h/(w+h)²_1. (w²–1)( /(w²-1)-V(w+h)²=1 Simplify the Equation. w² –1-(w²+2wh+h²–1) z = limh¬0 h/(w+h²-1 /[w²-1)(/(w²-1)-/(w+h²-1 (w2_j = lim½¬0 -2w-h (w2 –1)( /(w2 –1 2-1)-/(w+h)²– (w²–1) 3/½ Thus, the derivative of the function vis (w²-1) ½

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...
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I understand how to do this problem up until the last simplification line.  I was hoping you could explain a little further what happened here.  Thanks

Expand the function p (z + h) as follows.
1
p (z + h) =
-1
Substitute the function p (z + h) in equation (1).
(w+h)2 –1
= lim¬0
h
(w²–1)-/(w+h)²-1
= lim½¬0
h/(w+h)²-1
(w²–1)
(V(w2-1)-/(w+h)²–1)(/)-/(w+h)°-
(w²–1
= lim½¬0
V(w+h)²–1
–1)(/(w²-1)-/(w+h)° -
w2-
w2.
w? –1-(w²+2wh+h² –1)
= limh→0
(w+h)?–i
1)(/(w²-1)-/(w+h)²–1
w2-1
w2.
Simplify the Equation.
w?-1-(w²+2wh+h?–1)
Z =
lim-0
h/(w+h)°-1 /(w²-1)(/
(w2 – 1)-/(w+h)²–1
v².
-2w-h
= limh¬0
h/(w+h)° -1/(w²-1)((w?-1)-/(w+h)° -1
w2–
(w²–1)
Thus, the derivative of the function vis
(w²-1) ½ *
Transcribed Image Text:Expand the function p (z + h) as follows. 1 p (z + h) = -1 Substitute the function p (z + h) in equation (1). (w+h)2 –1 = lim¬0 h (w²–1)-/(w+h)²-1 = lim½¬0 h/(w+h)²-1 (w²–1) (V(w2-1)-/(w+h)²–1)(/)-/(w+h)°- (w²–1 = lim½¬0 V(w+h)²–1 –1)(/(w²-1)-/(w+h)° - w2- w2. w? –1-(w²+2wh+h² –1) = limh→0 (w+h)?–i 1)(/(w²-1)-/(w+h)²–1 w2-1 w2. Simplify the Equation. w?-1-(w²+2wh+h?–1) Z = lim-0 h/(w+h)°-1 /(w²-1)(/ (w2 – 1)-/(w+h)²–1 v². -2w-h = limh¬0 h/(w+h)° -1/(w²-1)((w?-1)-/(w+h)° -1 w2– (w²–1) Thus, the derivative of the function vis (w²-1) ½ *
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