## Posts tagged ‘Euler’

### Math Joke for Halloween

A joke about a graveyard, a dead person, and being frightened. All good things for All Hallow’s Eve.

A man was walking through the Alexander Nevsky Monastery when he heard someone say, “

x^{2}+ 2x= (x)(x+ 2).” Sure that his mind was playing tricks on him, he kept walking, but then he heard, “x^{2}+ 2x+ 1 = (x+ 1)^{2}.” He paused again, then heard, “x^{3}– 4x^{2}– 7x+ 10 = (x – 1)(x+ 2)(x– 5).” Concerned, he approached a cemetery worker. “Why do I keep hearing math equations?” he asked.“Oh, that’s Leonhard Euler,” said the worker. “He’s decomposing.”

For more Halloween math jokes, see Scary Math Facts for Halloween or Trig or Treat or Math Jokes for Halloween.

### Twin Pi Day

Today (June 23) around 7:41 a.m. and 8:05 a.m., respectively, my twin boys passed 3.1415926 years! My wife didn’t think it was a milestone worthy of celebration, but 154 days ago, I missed the chance to celebrate their *e* birthday, and I wasn’t going to let another opportunity slip away. This morning, we celebrated with circular pancakes for breakfast, and we had pizza for lunch. Which reminds me of a joke…

What is the volume of a disk with radius z and height a? pi · z · z · a

At lunch, I planned to explain *pi* to the boys. I wrote the letters *p* and *i* on a piece of paper and set the paper on the table, and Eli asked, “Daddy, why did you put *pee* on the table?” That was the end of the lesson. (It was funny to me that he’d pronounce it this way, since the *i* at the end of his name makes a long *i* sound. But then I thought of some other words he knows — such as *ski*, *mi* (Spanish for *my*), and his friend Ani (pronounced *ah*–*nee*) from school — and realized his mistake was completely understandable.

In regards to mispronunciation, here’s a thought to ponder.

Ya ever wonder how Euler pronounced Euclid?