Top Definition
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!
#calculus #shortcut #math #random #trig
by boyzIImen November 23, 2011
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