Maths

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Maths

by Cybermusings » Mon May 21, 2007 10:37 am
Mathematical operation
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Mathematucal operation

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Re: Maths

by jayhawk2001 » Mon May 21, 2007 7:05 pm
Hmm, not sure how (1) is sufficient. (1) just tells us that a@a = 1/2
and b@b = 1/2. How can we infer anything about a@b or b@a.

2 is sufficient. We are given
a@b = ab / (a^2 + b^2) = 1 / (a/b + b/a).

So, if we sub a with b, it still remains the same.

My vote for B, even though Kaplan (?) says D

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by Cybermusings » Mon May 21, 2007 11:40 pm
No Jay...Kaplan Says B...Unfortunately I said D!