Eigen_cos {EigenR} | R Documentation |
Matrix cosine of a real or complex square matrix.
Eigen_cos(M)
M |
a square matrix, real or complex |
The matrix cosine of M
.
library(EigenR)
M <- toeplitz(c(1,2,3))
cosM <- Eigen_cos(M)
sinM <- Eigen_sin(M)
cosM %*% cosM + sinM %*% sinM # identity matrix