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旧 2011-04-11, 17:38   #1
licm
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注册日期: 2011-03-31
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licm 正向着好的方向发展
默认 请教求 Jacobian 矩阵的程序问题

function nabla=jacob(Z)
syms z1 z2 z3 z4 z5 z6 z7 z8 z9 z10 z11 z12;
F=[[z1 z3 z2 z4 z5]*[z1 z2 z3 z4 z5^2]',z11+z12];
v=[z1,z2,z3,z4,z5,z6,z7,z8,z9,z10,z11,z12];
nabl=jacobian(F,v);
nabla=subs(nabl,v,Z);

在命令窗口中输入 jacob([1 2 3 4 5 6 7 8 9 10 11 12]),结果
??? Error using ==> maple
Error, (in type/matrix) wrong number (or type) of parameters in function diff

Error in ==> sym.subs at 228
NEWf = maple(['eval(subs(' celleqn(OLDexpr,NEWexpr) ',' char(OLDf) '));']);

Error in ==> jacob at 7
nabla=subs(nabl,v,Z);
请问问题出在哪里
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