this is the last part of the question from my other problem.
what is the domain of xy=20,000, ie, what's the smallest and greatest that x could possibly be?
this is the last part of the question from my other problem.
what is the domain of xy=20,000, ie, what's the smallest and greatest that x could possibly be?
If there are no restrictions already in place on y, x could be anything except 0.
c'mon! The problem is talking about x and y being the lengths of a fence section. Obviously, they have to be greater than 0 for the problem to have any meaning! You really should be able to reason that out.
On the other end, they can be almost infinitly large (bounded by the xy = 20000 restriction and both GREATER than zero).
I think the proper way to write the set that both x and y belong to is (0,inf). The parentheses rather than square brackets indicate that those values can be approached arbitrarily closely, but not achieved.
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