magardibosh107
magardibosh107 magardibosh107
  • 03-11-2020
  • Mathematics
contestada

Let a * b = 3a + 2b for a, b e Z. Verify that * is a
commutative binary operation on Z.
[2]​

Respuesta :

LammettHash
LammettHash LammettHash
  • 04-11-2020

It's not commutative:

a * b = 3a + 2b

but

b * a = 3b + 2a

We have equality only for

3a + 2b = 3b + 2a   →   a = b

Answer Link

Otras preguntas

Simplify the expression: (-1 + 3x)(4.9) =
Explain the status of foreign employment in nepal​
Answer the assignment questions using the World Geology map in this lesson and/or the earth's lithospheric plates map in the assignment document. You can also d
Which of these is a way that biostimulation can be used?
HUGE POINT GIVE AWAY! what is better? halo 2 or halo 4? make sure to go thank my profile :DDD
Alan bought a package of 6 socks for $8.99. Brittney bought a package of 12 socks for $16.25. which was the better buy? explain
5 rubber stamps cost $9.70. Which equation would help determine the cost 1 point of 11 rubber stamps? Choose 1 answer. * 5 $9.70 11 $9.70 11 OA) B) $9.70 650.70
Which of the following is one of the most abundant elements in all living things? A. Tin B. Titahsum C. Silver D. Carbon
X Which of the following statements accurately describes the idea of representative government? Electing legislators to pass legislation on behalf of citizens
A salesperson sold a car for $15,590 and their commission is $623.60. What percentage of the sale price is their commission?