Other contributors have said "What are the following terms-unit matrix-mean value of a function-minor of a determinant-negation-normal chord-null matrix-odd function?" is the same question as "What is a unit matrix?" If you believe that these are not asking the same thing and should be answered differently, click here
First, a small note: an m-by-n or m x n matrix has m rows and n columns. The eigenvalues λ of a matrix A are scalars such that Ax = λx for some nonzero x vector. The entries aij of a matrix A are...
Lines are measured with lines. For example, the length of a road is measured with standard lines (linear units) such as yards, miles, meters or kilometers. Areas are measured with areas. A field is...