Why do you think advertisers might adjust the kinds of products they advertise and the advertising techniques they use for diffe
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The quotient rule is used to find the derivative of a ratio between two functions. It is used in the case of tan(x) and cot(x) because tan(x) can be written as (so f(x) = tan(x) is really f(x) =
). Similarly, cot(x) can be written as
, so the quotient rule also applies.
