You forgot to mention the tiny intricate runes we cover the slice of rock with.

“Condemn” or “condone”? While similar sounding, those two words have basically opposite meaning. Yay English!

I’m just being a pendant here, but the derivative of x²+C is 2x. You put the constant at the wrong place.

Also, i’m glad you found a textbook well suited for you. I have to wonder what you mean by ‘why’, do you mean a proof?