... <看更多>

The identity matrix has a lot of neat properties. a few properties will be mentioned here. The inverse of an identity matrix is the identity matrix (I− ... ... <看更多>

one (two) of the uses for diag when nrow is specified or when x is a vector of length one, you get an identity matrix diag(5) diag(nrow = 5). ... <看更多>

My reasoning: Because In is the identity matrix, there should be no issues with factoring just like normal algebra. Step 3: A+In=0 ... ... <看更多>