saaideel saaideel

06-03-2017
Mathematics

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Use the equation given below to find f '' (π/ 3) . f(x) = sec x

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pdevereux pdevereux

07-03-2017

f'(x) = secxtanx
f''(x) = (secx)^3 + (secx)^2*(tanx)^2
Plug in [tex] \pi [/tex] / 3 and you get 8 + 12 = 20

Check me on that i did it in my head but it should be right

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