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anonymous
 one year ago
Matlab
could someone help me write the code
%want to store the particular solution in xp.
initialize xp set it to be the zero column vector with decent dimension
using the pivot columns from A generate pA
solve for pA*temp=b where temp is a temporary vector using pA\b
put temp in the positions of xp
output xp
anonymous
 one year ago
Matlab could someone help me write the code %want to store the particular solution in xp. initialize xp set it to be the zero column vector with decent dimension using the pivot columns from A generate pA solve for pA*temp=b where temp is a temporary vector using pA\b put temp in the positions of xp output xp

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0function csolve(A,b) [x,z]=size(A); pivot=[]; free=[1:1:z]; rreform = rref(A); for i=1:1:x for j=1:1:z if (rreform(i,j)==1) pivot=[pivot,j]; break; end end end free(pivot)=''; rank = length(pivot); fprintf('the rank of the coefficent matrix is %d.\n',rank); fprintf('the pivot variables are'); for i=1:1:length(pivot) fprintf('x%d',pivot(i)); end fprintf('.\n'); fprintf('the free variables are'); for j=1:1:length(free) fprintf('x%d',free(j)); end fprintf('.\n'); end

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this is my current code runs and works fine

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1I'm not too good at matlab...I'm just happy that I passed Deterministic Modeling a.k.a Mathematical Biology and I don't have to do matlab.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0its ok! @UsukiDoll im sure someone will help lol

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1usually it's @dan815 or @Kainui who are good at matlab but they never seem to respond and all the other matlab helpers don't show up here that often :/ But I think there's a site called stackoverflow that has online help for matlab

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh okay ill try that thanks!

dan815
 one year ago
Best ResponseYou've already chosen the best response.0and what do you have left to do?

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1if you like a nice print you might want spaces: ` ...variables are ');`  here and some commas,  ``` ... fprintf('x%d, ... end fprintf('\b\b.\n') ... ``` using `\b` to delete the last comma (backspace)

UnkleRhaukus
 one year ago
Best ResponseYou've already chosen the best response.1@lljenjenll, the code you have posted does seems to work fine, but it hard to see how it matches with the question, all the variable names are different
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