Use the equation given below to find f '' (piπ/4).

f (x) = sec(x)

f '' (pi/ 4) =?

y'=secxtanx

y"=secxtanx(tanx) + sec^2x(secx)

= sqrt2(1)(1) + 2(sqrt2)=3(sqrt 2)

Help?

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- October 7th 2009, 08:26 AMhazecrazetrig derivative problem
**Use the equation given below to find f '' (piπ/4).**

f (x) = sec(x)

f '' (pi/ 4) =?

y'=secxtanx

y"=secxtanx(tanx) + sec^2x(secx)

= sqrt2(1)(1) + 2(sqrt2)=__3(sqrt 2)__

Help? - October 7th 2009, 08:42 AMCalculus26
you are correct