percusse questions

percusse answers

• Negative phase margin for stable system
• Updating values in an array with logical indexing with a non-constant value
• rref vs. LU solving complexity
• Random positive semi-definite matrix with given eigenvalues and eigenvectors
• Spyder IDE automatic indentation
• Matlab adding rows and columns elegantly
• numpy.linalg.inv returns inverse for a singular matrix
• More efficient way to invert a matrix knowing it is symmetric and positive semi-definite
• compute determinant from LU decomposition in lapack
• Mean Squared error in Python