(adsbygoogle = window.adsbygoogle || []).push({}); The question is :

Show that the curve defined implicitly by the equation

X*Y^3 + x^3*Y = 4

has no horizontal tangent.

The answer is :

Can someone please explain what steps are used in order to obtain the answer in a simple way for a calculus beginner? This answer is not helping me understand the question and how to answer the question ( It is too complicated and gets me confused).

And if you have similar questions, please show me them so I can practice on them after I understand this question in order to be comfortable with this type of questions.

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# Can someone explain this answer "in layman's terms"?

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