- #1
RJLiberator
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Homework Statement
Lim (x,y,)--> (1, 3) of (x^2-1)/(xy-y)
Homework Equations
I know that the answer is 2/3 according to wolfram alpha multivariable limit calculator.
The Attempt at a Solution
So this is my first time doing multivariable limits, I've studied the following:
1) Direct substitution : Well, this doesn't work in our case as we get 0/0.
2) Try to go along different paths: say y=x and so forth. This also doesn't work. If we make y=x then we get 0/0. And I also don't feel good about trying to prove that the limit exists with this path idea.
3) The 'squeeze' idea: I'm not really sure how to apply this to this particular problem. Is this what I need to do?
Is there anything else that I am not seeing?
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