Definitions by boyzIImen

SFD Rule 

you just look at the fraction and thats your answer

math test:
derivative of sin2x/sin3x = ?

kid 1: i dont want to show the work for this
kid 2: just use the SFD Rule
kid 1: oh! its just 2/3!

SFD Rule by boyzIImen November 23, 2011