Question 1183543
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The solution by Edwin is correct.


The solution by @MathLover1 is not correct.



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<H3>Notice</H3>

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    Edwin, please look into your first formula and the comment after it.


    I think this comment must be re-edited in this way


        " {{{y^2/a^2-x^2/b^2=1}}} is a hyperbola that opens up and down. "


    If you agree, I will erase this notice as soon as I see your correction implemented in your post.
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