Happy face math – CHEAT SHEET

1 Star2 Stars3 Stars4 Stars5 Stars 5.00 (3 votes)


You might have seen this before, it seems to have made its way around the internet. It’s called Charlie Smith’s Happy Face Math:

Cheat Sheet:

First Column:

  • 1st one is the inverse (ie, upside down)
  • 2nd one is being squared (hence the square)
  • 3rd one is being cubed (hence the cube)
  • 4th one is supremum, but you read it as “soup“, hence the soup 😀
  • 5th one is the partial differential operator, hence the “part of a face”
  • 6th one is sine function, read as “sine”, which rhymes with “sign“, hence the sign

Second Column:

  • 1st one is the “real part” of a number/function, hence, there is no imaginary part. For example, Re( a + bi ) = a. Thus, you remove the i’s.
  • 2nd one is imaginary part. Im( a + bi ) = b. In this case, you only keep the i’s.
  • 3rd one is  the curl, hence the curly hair. 😀
  • 4th one is  the gradient function, read as “grad“, hence the smiley face looking like he just graduated from school. 😀
  • 5th one is the log function, hence the smiley face on a “log” (tree thingy)

1 thought on “Happy face math – CHEAT SHEET”

  1. ❓ 😛 🙁 👿 ❗ 🙂 😳 😀 😮 😯 😕 😎 😆 😡 😈 🙄 😉 💡 ➡ 😐 😥 :mrgreen:

Comments are closed.