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

Why was World War I considered a total war? (Points : 2) Governments took control of economies, restricted some civil rights, and drafted men to fight. Governme
which best describes the relationship of the embryo and the fetus.
the first armed conflicts of the revolutionary war
examples of three different types of computer storage
If 150g of sugar is used for 5 cakes How much is used for 7 cakes?:)
why is a conductor important in science terms
What are the disadvantages of wind pollution
examples of three different types of computer storage
why did some colonist enslave native Americans and Africans
Write a modern question that means the same as: What would'st thou? Who hath dared to wound thee?