I want to double all the points on the elliptic curves .I have written a code but it gives error. Matrix A contains few points but this code dosnot work.
%curve equation is y^2=x^3+17 mod 313
A=[[199 29] [200 26] [202 14] [203 110] [209 102]];for i=1:5B=multell(A(i),2,0,17,313);endB
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