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March 29, 2017

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Evaluate the derivative of the function below at the point (ð/3, 9.301). (Round to three decimal places.)

y= (9/x) + ((cosx)^.5)

  • CALCULUS help please - ,

    y = 9/x + sqrt(cos x)
    y' = -9/x^2 - .5sin x/sqrt(cos x)
    y'(pi/3) = -9/(pi^2/9) - .5*sqrt(3)/2 / sqrt(.5)
    = -81/pi^2 - sqrt(6)/4
    = -8.819

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