Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
Related questions
Question
Complete step 3. Why no identity.

Transcribed Image Text:Thes the opetatin is nat
associative.
JATE STUD
IQ0: Whether ť is associative, omnnpatue
and has an identity
elemot.
ab
*is defined on 2* by tetting axb=2
ab
axb=205
bya=2ba
Thus axb= b*a
It'S ammunative
ab
ba
6 Not associative: (axb)¥c=
205
a12°c)
こ
Hence, laxb) ¥c # à xb *c)
3 No idette:
iden ttg element.
Bx the way of onfraditioe, Suppose there exists
Such that
axe = exa =a.
ae
axe=2
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