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Question: What is wrong with my code?

Question:What is wrong with my code?

sunflower 30 Maple 17
November 09 2015
0

Hello every one. I writed:

M:=-2,-1,0,1,2:
f:=x->2^x
with(LinearAlgebra);
for i from 2 by 1 to nops(M) do
for j from 2 by 1 to i
Q(i,j)->((x-M[i-j])*Q(i,j-1)-(x-M[i])*Q(i-1,j-1))/(M[i]-M[j-1]):
A:=Matrix(Q,nops(M),nops(M)+1):

end do;
end do;
print(A)
But I don't know wrong in my code. That is Neville algorithm

can you help me? sorry, my English is not very good
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