Math humor

A joke from the math-major student speaker at my sister's graduation ceremony yesterday:

A mathematician jumps abourd a bus full of functions. He threatens the functions, "I'm going to integrate you! I'm going to differentiate you!" the functions quake with fear, and go running off the bus. All except one, who stays there, calmly defiant. The mathematician stares at the little function. "Didn't you hear me? I'm going to integrate you! I'm going to differentiate you!" But the remaining function was unperturbed. "Why aren't you afraid of me? What function are you?" The little function replied, "I am e to the x!"

EDIT:

The speaker closed her comments with, "May you always find a delta for your epsilon."

interesting (?) licence plate

driving to College Park yesterday, saw one of the new licence plates. For about 20 years now, the standard licence plates in Maryland have been letter letter letter, number number number. Now they are going to a new sequence, number letter letter, letter number number.

We (BE and I) did a double take when we saw the following:

8AD A33