Let f be a real symmetric bilinear function with f(α, α)>0 for any vector α∈V, and it is said that f is positive definite. A time symmetric matrix A with the same property, that is, for any real nonzero column matrix X, a matrix with xtax >:0 is also called positive definite.
A.20 14 codes of various majors of China West Normal University
I had it when I filled out my volunteer.
B. What are