solve.tridiag {tis} | R Documentation |
This function solves the equation a %*% x = b
for x
,
where a
is tridiagonal and b
can be either a vector or a
matrix.
## S3 method for class 'tridiag': solve(a, b, ...)
a |
a tridiag object: a square tridiagonal (all zeroes
except for the main diagonal and the diagonals immediately above and
below it) matrix containing the coefficients of the linear system. |
b |
a vector or matrix giving the right-hand side(s) of the
linear system. If missing, b is taken to be an identity matrix
and the function will return the inverse of a . |
... |
ignored |
Uses the LINPACK dgtsv
routine.