Joke of da day 28/04

Two mathematicians are in a local diner, arguing. The first mathematician is complaining that the average citizen knows *nothing* about math, people are idiots who don’t even know how to balance their checkbooks these days, and the world is generally going to hell in a handbasket. The second mathematician is objecting, telling his friend that the situation isn’t that bad, and warning him not to underestimate the average citizen’s mathematical knowledge.


After much argument, the first mathematician staggers off to the restroom. The second mathematician calls the tired-looking waitress over.


“Yeah?” Asked the waitress


He hands her $20. “I’d like to play a little joke on my friend when he gets back. I’m going to ask you a question. When you answer, I want you to answer, ‘X squared.’ Can you do that for me?”
“Sure, whatever.”


After a few minutes, the first mathematician returns and sits down. The second mathematician says, “Look, I’ll *show* you that the average citizen knows more about math than you think they do.” He waves the waitress over.


“Yeah, what can do for you?”


“I just have a simple question for you, ma’am. Can you tell me what the answer to the integral of 2x dx is?”


The waitress scrunches up her face. “Sure, thats.. X squared.”


The second mathematician leans back in his chair, looks at his friend, and smiles smugly.


Then the waitress calls over her shoulder, “Plus a constant.”