Two mathematicians were having an argument over dinner, about the knowledge of the general public. While one went to the restroom, the other called over the wai

Two mathematicians were having an argument over dinner, about the knowledge of the general public. While one went to the restroom, the other called over the waitress and offered her $20 if she would reply "one-third x cubed" to a question he would ask. When his colleague returned, he asked "excuse me, do you happen to know the integral of x squared?" She paused for a moment and said "one-third x cubed" to his colleague's amazement. Then she walked away, pocketing the money and smirking "... plus a constant."