evaluate Attachment 25684

i have used directional derivate of f and used the fundamental theorem of line integrals

is it right

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- November 12th 2012, 07:15 PMprasumclosed integration
evaluate Attachment 25684

i have used directional derivate of f and used the fundamental theorem of line integrals

is it right - November 12th 2012, 07:58 PMchiroRe: closed integration
Hey prasum.

Show us your complete working out and your final answer so we can make comments. - November 12th 2012, 08:18 PMjakncokeRe: closed integration
use \int f dr = \int f(c(t))c'(t) dt where c is the parametric representation of the curve you are integrating over. So in this case