Can you please explain the solution attached below.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.1: Parabolas
Problem 44E
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Can you please explain the solution attached below. 

sal
Use
ML
lemma to
22
| 1 5 1=20
121=2 22²=2² dz|.
2Rez
4
le 22 | = |ezrez | ≤ e 2:2 zieu
12²-21 ≥ |2²|-1|2|
= 121²2²-121
4-2
So
= 2
22
Z
-2
Rez
|e²| = efe:
е
So
L= length of curve
2Jt
x r
=
L
121=2
show
<2JT.e4
M = e
e
4 J
N
4
2
22
ا۔
2
-2
dz | ≤LM
4e4
2JT e4
Transcribed Image Text:sal Use ML lemma to 22 | 1 5 1=20 121=2 22²=2² dz|. 2Rez 4 le 22 | = |ezrez | ≤ e 2:2 zieu 12²-21 ≥ |2²|-1|2| = 121²2²-121 4-2 So = 2 22 Z -2 Rez |e²| = efe: е So L= length of curve 2Jt x r = L 121=2 show <2JT.e4 M = e e 4 J N 4 2 22 ا۔ 2 -2 dz | ≤LM 4e4 2JT e4
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