15. If : DC such that A CD, then f-¹[[A]] CA. 1 2 3 4 5 16. Consider the permutations f 5 3 1 2 4 {1,2,3,4,5). Then go f = 1 2 21 3 4 5 43 5 and g 1 2 3 4 5 4 3 1 5 2 on the set

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.6: Permutations
Problem 12E
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15. If : DC such that ACD, then f-¹[[A]] CA.
16. Consider the permutations f =
1 2 3 4 5
5 3 12 4
$)
{1, 2, 3, 4, 5). Then go f =
1
21
2 3 4 5
43 5
and g
1 2 3 4 5
4
3 15
2
on the set
Transcribed Image Text:15. If : DC such that ACD, then f-¹[[A]] CA. 16. Consider the permutations f = 1 2 3 4 5 5 3 12 4 $) {1, 2, 3, 4, 5). Then go f = 1 21 2 3 4 5 43 5 and g 1 2 3 4 5 4 3 15 2 on the set
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