“You know how you’re always putting things like ‘just to keep @RealityMinus3 happy’ in your posts?”
“Of course, sensei!”
“Well… you remember that post about missing solutions in a trig problem?”
What follows is a guest post by Elizabeth A. Williams, who is @RealityMinus3 in real life.
This thing about “infinite denominators”: I solidly feel that this is not the way to think about it, and it’s not what I would encourage a new-material student to do, because “infinite denominators” are an effect (usually, perhaps always?) of dividing by zero, and the thing to do is to think…
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