Matlab matrix multiplication error

    • [DOC File]Matlab Vectors - UPM

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      For example, you can find the inverse of a matrix. You must be careful, however, since the operations are numerical manipulations done on digital computers. In the example, the matrix A is not a full matrix, but matlab will still return a matrix. >> inv(A) Warning: Matrix is close to singular or badly scaled. Results may be inaccurate.

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    • [DOC File]The MATLAB Notebook v1.5.2

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      Proposition 5.1: Let A be any matrix. Then AAT and ATA are both positive semidefinite symmetric matrices. Proof: The symmetry of both AAT and ATA. is immediate from the multiplication rule for the transpose. Now let . v. be any vector. Then vTAATv = ATv • ATv ≥ 0. This shows that AAT. is positive semidefinite, and a similar argument shows ...

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    • [DOC File]It is assumed that the software is installed on the ...

      https://info.5y1.org/matlab-matrix-multiplication-error_1_23cb50.html

      >> c-8 % the number 8 is subtracted from the matrix c %when a scalar and an array are involved in the addition (subtraction) operation, the scalar is added to (or subtracted from ) all the elements in the matrix. Multiplication of arrays >> a=[1 4 2;5 7 3;9 1 6;4 2 8] %define a 4*3 matrix a

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    • [DOC File]MATLAB NOTES FOR GEOPHYSICS

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      There is nothing about Matlab in Yilmaz' book , but the discussion about matrix methods for design of deconvolution operators ( Section 2.3 and Appendix B) should motivate you to learn matrix multiplication and inversion on the computer. His discussions could help you understand the importance of convolution and correlation, for example:

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    • [DOC File]Matlab Tutorial

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      x = inv(a)*b This brings up the special functions available by Matlab for use with matrices. The zeros command generates a matrix of zeros (N X M) The ones command generates a matrix of ones (N X M) The eye command generates an identity matrix (which can be non-square) Colon notation The colon in Matlab has a special significance.

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    • [DOC File]MATLAB

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      Matlab has many built in matrix functions and operators. I have listed some here that you may find useful: >> size(A) gives the dimension of the matrix A >> inv(A) calculates the inverse of the matrix A , if it exists. >> det(A) calculates the determinant of the matrix A

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    • [DOC File]Operations in Matlab:

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      Matlab is an excellent tool for performing a wide variety of operations on scalar, vector, and matrix values. Scalar: A single number >> a = 5 Real scalar 5

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    • [DOC File]Matlab Primer

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      inv(A) evaluates the inverse of matrix A. cond(A) evaluates the condition number of matrix A. eig(A) evaluates the eigen-values of matrix A. Remarks . While programming in Matlab try not to use special constants as variable names. If you do not remember the name of a variable in a Matlab …

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    • [DOC File]Matlab Quick Command Reference Sheet: Page 1

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      4 if Simulink, or 5 if a built-in Matlab function. finite(A) Returns matrix of size A with 1s for finite values, 0s for Inf or NaN. isinf(A) Returns matrix of size A with 1s for Inf or -Inf values, 0s if not. isempty(A) Returns 1 for an empty matrix, [], 0 is not empty. ishold Returns 1 if ‘hold plot’ is ON

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    • [DOC File]METHOD OF MOMENTS ESTIMATION FOR FLEXIBLE SPATIAL …

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      The method requires some matrix multiplication and the calculation of the trace of W’W. However, it does not require the calculation of the determinant or the eigenvalues of W, problems which plague the maximum likelihood (ML) estimating procedure. ... METHOD OF MOMENTS ESTIMATION FOR FLEXIBLE SPATIAL ERROR MODELS: A LIBRARY FOR MATLAB ...

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