optimization of wave drag function ( double summation term)

Hi everyone,

Im stucked with the function added to this email (wave drag function) I 
want to optimize wave drag function ' F ' ( objective function)
S is the cross sectional area
S'' is the 2nd derivative of S
n is the number of cross sections taken from aircraft

My questions are what type of optimization method can we use ? how can 
we perturb the x-sectional areas ? Since we have approximately
100 x-sections, how can we calculate the gradient ( if method is 
gradient-based, ..) ?

Thanks for your time and attention

-- 
Can

-------------- next part --------------
A non-text attachment was scrubbed...
Name: f.png
Type: image/png
Size: 4782 bytes
Desc: not available
URL: <http://www.math.utexas.edu/pipermail/maxima/attachments/20131008/e0533bdc/attachment.png>;