TITLE: What will be the equation corresponding to this graph?
QUESTION [0 upvotes]: Here is the image of a graph. It looks much similar to tan(x) graph but it isn't. I mistakenly made this graph while making the graph of tan(x). But I am curious to know that what will be the equation of this graph and how am I supposed to find it?

REPLY [1 votes]: Since it is both graphs of $y=\tan x$ and $y=-\cot x$ superimposed, you could achieve this with the implicit function $$(y-\tan x)(y+\cot x)=0$$
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