lyzhou1990
New member
- Joined
- Jul 24, 2006
- Messages
- 17
I got this problem from a practice test and had no idea how to solve it. (In fact, I'm not even sure if I'm putting it in the right place...) Anyway, the problem is below. I'd appreciate it if someone could answer this problem and give an explanation, too.
36. The operation given by (a, b)[diamond](c, d) = (a + bc, bd) is defined on the set of ordered pairs with nonzero second elements. Which of the following is the identity element for this operation?
A) (0, 0)
B) (1, 1)
C) (1, 0)
D) (0, 1)
E) (0, -1)
Thanks again.
36. The operation given by (a, b)[diamond](c, d) = (a + bc, bd) is defined on the set of ordered pairs with nonzero second elements. Which of the following is the identity element for this operation?
A) (0, 0)
B) (1, 1)
C) (1, 0)
D) (0, 1)
E) (0, -1)
Thanks again.