I thought I had heard every silly mnemonic device for remembering mathematical formulas, but I recently heard a new one: the clowns BOBO, BOTU, and BETC for remembering how to graph rational functions.
- BOB0: bigger (exponent) on bottom,
- BOTU: bigger on top, undefined
- BETC: bottom equals top eponent, coefficients (i.e., the ratio of coefficients)
Which naturally leads to this pearl of wisdom: