Simple matlab code issue

조회 수: 6 (최근 30일)
Leora
Leora 2014년 9월 16일
댓글: Youssef Khmou 2014년 9월 16일
I have an issue with a very basic code using matrices. I had to define 3 matrices and do a few operations. I got them all correct except for the last one. It says the dimensions don't match but that is what the question is telling me to do. Any help would be appreciated.
A=[1,2,3;4,5,6;7,8,9]; %Defining matrices A,B and C B=[2,8,2;1,1,1;7,0,2]; C=[2;0;1]; A+B A.*B transpose(C)*B inv(A)*(C).^1 B+(C).^2
The last one is incorrect and the question asks me to do B+C^2
  댓글 수: 1
Leora
Leora 2014년 9월 16일
The error says error using + dimensions must agree

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답변 (2개)

Youssef  Khmou
Youssef Khmou 2014년 9월 16일
편집: Youssef Khmou 2014년 9월 16일
The quantity (C')*B*inv(A)*(C).^1 is scalar, and B+C.^2 is not correct :
B+(C*C').^2;
is correct
  댓글 수: 2
Leora
Leora 2014년 9월 16일
But my code says B+C.^2 and its still wrong
Youssef  Khmou
Youssef Khmou 2014년 9월 16일
the answer is edited .

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Hikaru
Hikaru 2014년 9월 16일
B is a 3x3 matrix and C.^2 is a 3x1 matrix. There's no way you can add them. If you want to square matrix C (i.e. C^2), then C has to be a square matrix as well.

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