[X,alpha,condx] = sqrtm(A)returns stability factoralphaand an estimate of the matrix square root condition number ofXin 1-norm,condx. The residualnorm(A-X^2,1)/norm(A,1)is bounded approximately byn*alpha*epsand
The usual square root S of a matrix M is a matrix with S*S=M, and you get this S via S = sqrtm(M). If you want to define a matrix S with S'*S = M as the square root of M, you can do this. Then S = chol(M). ...
Seesqrtmfor the matrix square root. Extended Capabilities expand all Version History Introduced before R2006a expand all Select a Web Site Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:中国. ...
Compute the square root of each element ofX. Y = sqrt(X) Y =1×5 complex0.0000 + 1.4142i 0.0000 + 1.0000i 0.0000 + 0.0000i 1.0000 + 0.0000i 1.4142 + 0.0000i Input Arguments collapse all X—Input array scalar|vector|matrix|multidimensional array|table|timetable ...
Use the sqrt() and sum() Function to Find the Norm of Rows of a Matrix in MATLABThe sqrt() function in MATLAB is used to compute the square root of each element in an array. It can be applied element-wise to a matrix or vector, and the sum() function in MATLAB calculates the ...
inv–> inverse of matrix lu–> LU factorization qr–> QR factorization hess–> Hessenberg form schur–> Schur decomposition rref–> reduced row echelon form expm–> matrix exponential sqrtm–> matrix square root poly–> characteristic polynomial ...
post-normalization process occurs. This process performs bit-shifts on the input array before passing it to the CORDIC kernel. The result is then shifted back into the correct output range during the post-normalization stage. For more details on this process, seeCompute Square Root Using CORDIC....
% this particular script finds the square root of a number M % (input by the user) % note that the function we are trying to zero is f(x) = x^2 – M. % this function is hard-coded in the script. g=9.8065; k=0.00341; % f(x)=log(cosh(t*srt(g*k)))/k; ...
特别地,如果A是一个可逆的方阵,那么A^(-1)可用来计算A的逆矩阵(inverse matrix)。另外,MATLAB中的inv函数也可以计算逆矩阵,它们的计算结果相同。 根据线性代数中逆矩阵的定义,互为逆矩阵的两个矩阵的乘积为单位矩阵(主对角线为1,其余位置为0的方阵),我们通过上表的第三行代码验证了这一点。注意:由于浮点数运...
F = funm(A,f) computes the function f(A) for the square matrix A. For details, see Matrix Function. exampleExamples Matrix Cube Root Find matrix B, such that B3 = A, where A is a 3-by-3 identity matrix. To solve B3 = A, compute the cube root of the matrix A using the fun...