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Hey there TL'ers, I am in need of some quick assistance regarding a problem I'm coding. It is CS, Mechanical Engineering, and general physics-related but the key problem I'm having is simply transforming the problem into an appropriate system of FOR loops.
If I have a function
F = b_0 + b_1 + b_2[(x-x_1)+(x-x_0)(x-x_1)] + b_3[(x-x_1)(x-x_2)+x-x_0)(x-x_2)+(x-x_0)(x-x_1)] + ...
F' '(x)/d^2x = 2*b_2 + b_3 [(x-x_1)+(x-x_2)+(x-x_3)+(x-x_1)+(x-x_2)+(x-x_3)]**
+ b_4[(x-x_0)(x-x_1)+(x-x_0)(x-x_2)+(x-x_0)(x-x_3)+(x-x_1)(x-x_2)+(x-x_1)(x-x_3)+...
The ** is a special note that this pattern repeats. In fact for each b_i the pattern will repeat, so one could simplify each pattern to 2b_i[halfpattern]
Can anyone see a pattern here for which I could write for loop to create such a second derivative function??
50,000 free high fives for anyone who can solve this before 1:00, I have been staring at it and writing big sigmas and pi's all day 
 
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Had to laugh at the other thread.
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One of the things that would help get a serious answer would be to post a version of the question that isn't the text-attempted math symbols. I, for one, have no patience to try to decipher that mess. Also if you could post what you've attempted so far it would probably be easier to point you in the right direction.
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Use MathType within Word (or a similar math program) to make this easier to read.
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it's recursive. every recursion have a iteration equivalent but not verse versa, need i say more?
anyway that's all i can tell from your post (some crappy factorial explosion)
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You've got about 10 minutes to show that you put any effort into doing this beyond posting the formula before your blog gets flooded again
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shrug maybe this will entice someone to help him
doesn't make it any easier to read in my opinion lolol
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EPT![[image loading]](http://imgur.com/CzQTk.png)
