inversion {salad} | R Documentation |
Determinant and matrix inversion for dual matrices
Description
Methods extending to dual matrices the corresponding methods for numeric matrices.
Usage
det.dual(x, ...)
## S4 method for signature 'dual'
det(x, ...)
## S3 method for class 'dual'
determinant(x, logarithm = TRUE, ...)
## S4 method for signature 'dual,dual'
solve(a, b, ...)
## S4 method for signature 'dual,missing'
solve(a, b, ...)
## S4 method for signature 'numericOrArray,dual'
solve(a, b, ...)
## S4 method for signature 'dual,numericOrArray'
solve(a, b, ...)
Arguments
x |
a dual matrix |
... |
extra parameters (ignored) |
logarithm |
if 'TRUE', get logarithm of modulus of determinant |
a , b |
dual or numerical arguments for 'solve' |
Value
'det' returns a dual scalar, 'determinant' a list with components 'modulus' (which is a dual object) and 'sign', and 'solve' returns a dual object (vector or matrix).
Examples
x <- dual( matrix(c(1,2,1,3), 2, 2) )
det(x)
d(det(x), "x1.1")
solve(x)
d(solve(x), "x1.1")
[Package salad version 1.0 Index]