Thread: Is this just a made up function/combination?

It's on a practice SAT test.

If x (then there's a symbol that's a filled in diamond) y = x^(1/y), then (-3 (filled in diamond) 1/3) (filled in diamond) 1/3 = ?

I understand how to solve it, but is the filled in diamond an operation that's made up for the problem, or is it a known operation?

Hi

It is an operation that's made up for the problem

That's what I thought.

And the first part, "x (filled in diamond) y = x^(1/y)" tells you how that symbol is defined. What is -3 (filled in diamond) 1/3 ?

The second part is the problem. After they define the operation, then they want you to perform it on the second part.