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September 19, 2014

September 19, 2014

Posted by **Kaamini** on Friday, November 4, 2011 at 1:42pm.

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

- CALCULUS help please -
**Steve**, Saturday, November 5, 2011 at 4:11pmy = 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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