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The operation * is defined for all non-zero x and y by the equation . Then ... ...

The operation * is defined for all non-zero x and y by the equation x * y = x/y. Then the expression (x * y) * z is equal to


(A)

z/(xy)


(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Problem Set C: Defined Function

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Posted: 01/05/2013 00:42
Shouldn't the answer be (d)? Since before you can switch a fraction from division to multiplication you should reciprocate it first?
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Posted: 01/25/2013 22:31
I think you are right. I'm pretty positive.
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Posted: 01/25/2013 23:26
Sorry guys, the answer is not D. (x/y)/z = x/y * 1/z = x/yz
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