In this content of Mechanical Base, we will show some kinds of Linear Algebra commands in Matlab® that will make your linear algebra calculations in Matlab® very easy. It is very important to know these commands in Matlab® coding to do advanced calculations in Matlab® again.
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inv(a): Taking the inverse of the matrix an in Matlab®.
a’: Taking transpose of the matrix in Matlab®.
det(a): Calculation of determinant of matrix a in Matlab®.
a+b: Addition of same dimension a and b matrices in Matlab®.
a-b: Subtraction of same dimension a and b matrices in Matlab®.
a*b: Multiplication of same dimension a and b matrices in Matlab®.
a/b: If b is a regular square matrix(determinant of this matrix is different from zero), makes a*inv(b) calculation with same dimensioned b.
a.*b: The elements of matrix a and matrix b will be multiplied respectively around them.
a./b: The elements of matrix a and matrix b will be divided respectively around them.
trace(a): Diagonal elements of a matrix will be added in Matlab®.
diag(a): A row vector will be created with diagonal elements of a matrix. Or if “a” is a vector, a matrix that includes diagonal elements of “a” vector will be created in Matlab®.
sum(a): Whole rows of matrix a will be added. If “a” is a vector, the result will be the addition of vector elements.
triu(a): The upper triangle matrix of a matrix will be created in Matlab®.
tril(a): The lower triangle matrix of a matrix will be created in Matlab®.
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This article is prepared for completely educative and informative purposes. Images used courtesy of Matlab®
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