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    how to get the derivative of a quotient 3/(t+1)?

    how to get the derivative of a quotient 3/(t+1)?

    +1  Views: 424 Answers: 1 Posted: 14 years ago

    1 Answer

    We'll differentiate the given function, with respect to t.


    We'll use the quotient rule:


    v'(t) = [(1+3^t)'*(3^t) - (1+3^t)*(3^t)']/(3^t)^2


    We'll differentiate and we'll get:


    v'(t) = [(3^t*ln3)*(3^t) - (3^t*ln3)*(1+3^t)]/(3^t)^2


    v'(t) = [(3^t*ln3)*(3^t - 1 -3^t)]/(3^t)^2


    We'll eliminate like terms from numerator:


    v'(t) = -(3^t*ln3)/(3^t)^2


    We'll simplify and we'll get:


    v'(t) = -(ln3)/(3^t)


    v'(t) = (ln 1/3)/(3^t)


    The first derivative of v(t)=(1+3^t)/3^t is:


    v'(t) = (ln 1/3)/(3^t)



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