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

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

Find the geometric mean of 24 and 32

Determine if the graph is symmetric about the x-axis, the y-axis, or the origin. r = 4 - 4 cos θ

PLEASE HALP ASAP 20 POINTS WILL GIVE BRAINLIEST

Rodney and Lisa have been dating since high school and plan to get married and start a family soon. Lisa loves Rodney but is concerned about one of his habits.

Li Chang has recently started his own business. He plans to launch his design for an application (app) for a smartphone. All of his direct competitors have put

If tan^3(theta) -1/tan(theta)-1 - sec^2(theta) + 1 = 0 find cot(theta)

Explain how myelination of a nerve fiber occurs? What cells do it?

The mass of a proton at rest is 1.67 10 2kg . Calculate the value of e/m for a proton.

what is the inverse of y=12^x

What was two states that were not part of the United States at the time Lewis and Clark’s travelled,but are now