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

Use long division to divide 2x4 - 9x3 - 18x2 + 16x + 5 by x2 - 6x + 1. What is the remainder? Select one: a. x - 7 b. x + 7 c. 3x - 14 d. 3x + 14
How much of the tea was sold in New York and Philadelphia?
What social issue does Kate Chopin primarily depict in her story "The Story of an Hour"?the defeatist attitude of genteel nineteenth-century womenthe inner conc
Every year your salary increases 6%. If your annual salary this year is $30,000, what is your projected approximate salary five years from now?
A constant horizontal force F is applied to a 5 kg box on a frictionless horizontal surface. The box starts from rest and moves 12 meters in 5 seconds. a) what
If the current price of bread dropped by 44 cents, 9 loaves of bread would cost as much as 7 do now. What is the current price of bread?
math 3×219solve using place value blocks
what is the relationship between chemical bonds,chemical equations,and chemical reactions
25 points hurry help math fast!
When 12 is multiplied by 6, the result is what?