- #1
appplejack
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Homework Statement
Find lim sin4x/3x
x -> 0
Homework Equations
The Attempt at a Solution
I did some algebraic massaging and got
sin4/3x = 4/4 * sin4x/3x = 4/3 * sin4x/4x
but I don't understand how sin4x/4x becomes 1 like my textbook says so.