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

Ramon has a rope that is 25 1/2 feet long. He wants to cut it into 6 pieces that are equal in length.  How long will each piece be?
is 2 squared between 1.4 and 1.5
Why did the British Monarchy's believe that they had a right to tax the colonies in order to help finance the French and Indian War?
a region in which there is a high probability of finding an electron is called a field
How do deserts form?
Stacy saved 30% on a single item. If she saved $60.00, what was the cost of the item before the discount?
What role did the Scientific Revolution play in bringing about the Enlightenment?
If the diameter of a circle is 5.5 cm what is the radius ?
Calculate how much work you need to move the 130 N trunk to a ledge 2 m above.
what is -1.716 as a fraction?