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.
|
a %*% x = b for b,
where b can be either a vector or a matrix.
backsolve, qr.solve.