**Derivative**

At one time, that word referred to something other than a work of art too obviously influenced by another.

My 11th grade precalculus teacher has died. To the surprise of those who joke that people become journalists because they're bad at math, I declare proudly that I rocked at calculus. I did pretty well in pre-calc, but I'm pretty sure I had the highest grade in my senior year calc class.

And now, I kid you not, I don't even remember what calculus is for. I don't know what a derivative is, or how to find one, or even what the symbol is. I've used algebra from time to time in my real life, but I guess it's true, one does not need to know calculus to survive in the world.

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