First page Back Continue Last page Overview Graphics
Numerical methods also have problems when:
- Equations are degenerate "within round-off error".
- Accumulated round-off errors swamp solution (magnitude of a's and x's varies wildly).
For n,m < 50, single precision usually OK.
For n,m < 200, double precision usually OK.
For 200 < n,m < few thousand, solutions possible only for sparse systems (lots of a's zero).