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北京石油化工学院2026年研究生招生接收调剂公告
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amethyst356

木虫 (小有名气)

[求助] 这段code应该怎么修改?

clc;
clrear;

x = [0:0.1:1]

for j = 1:length(x)

         y(j) = (j-1)*10;

        m11(j) = cos(y(j));
        m12(j) = -sin(y(j));
        m21(j) = sin(y(j));
        m22(j) = cos(y(j));

       M(j) = [m11(j) m12(j);m21(j) m22(j)];

       n11(j) = -cos(y(j));
       n12(j) = sin(y(j));
       n21(j) = sin(y(j));
       n22(j) = -cos(y(j));

       N(j) = [n11(j) n12(j);n21(j) n22(j)];

       MN(j) = M(j).*N(j);

       P(j) = (MN(j)).^8

       p11(j) = (P(j))(1,1);
       p12(j) = (P(j))(1,2);
       p21(j) = (P(j))(2,1);
       p22(j) = (P(j))(2,2);

      R(j) = (p11(j)+p22(j))/(p21(j)+p22(j));
end

plot(y,R)

???  In an assignment  A(I) = B, the number of elements in B and
I must be the same.

Error in ==> RT at 41
M(j) = [m11(j) m12(j);m21(j) m22(j)];

请问上面的code怎么修改,谢谢!
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dbb627

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【答案】应助回帖

★ ★
xiegangmai(金币+2): 谢谢应助! 2011-11-17 23:14:31
amethyst356(金币+50): 2011-11-18 07:40:12
CODE:
clc;
clear;

x = [0:0.1:1]

for j = 1:length(x)

         y(j) = (j-1)*10;

        m11(j) = cos(y(j));
        m12(j) = -sin(y(j));
        m21(j) = sin(y(j));
        m22(j) = cos(y(j));

       M = [m11(j) m12(j);m21(j) m22(j)];

       n11(j) = -cos(y(j));
       n12(j) = sin(y(j));
       n21(j) = sin(y(j));
       n22(j) = -cos(y(j));

       N = [n11(j) n12(j);n21(j) n22(j)];

       MN= M.*N;

       P= MN.^8

       p11(j) = P(1,1);
       p12(j) = P(1,2);
       p21(j) = P(2,1);
       p22(j) = P(2,2);

      R(j) = (p11(j)+p22(j))/(p21(j)+p22(j));
end

plot(y,R)

The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
2楼2011-11-17 19:31:09
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