| solve {base} | R Documentation |
This generic function solves the equation a %*% x = b for x,
where b can be either a vector or a matrix.
solve(a, b, tol = 1e-7)
a |
a numeric matrix containing the coefficients of the linear system. |
b |
a numeric vector or matrix giving the right-hand side(s) of
the linear system. If omitted, b is taken to be an identity
matrix and solve will return the inverse of a. |
tol |
the tolerance for detecting linear dependencies in the
columns of a. |
hilbert <- function(n) { i <- 1:n; 1 / outer(i - 1, i, "+") }
h8 <- hilbert(8); h8
solve(h8) # gives error: `singular'
sh8 <- solve(h8, tol = 1e-10)
round(sh8 %*% h8, 3)