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TMtx.BackError Property
TMtx Class | TMtx Members | MtxVec Namespace | public | See Also
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The component-wise backward error.

Pascal
property BackError: double;
Description

Set by the LUSolve method, if the RefineSolution property was True. The BackError property returns the component-wise backward error b. The backward error is the smallest relative perturbation in elements of A (where A is the calling matrix) and b such that x is the exact solution of the perturbed system: 

 

 

The BackError property is calculated only if the RefineSolution property is set to true.

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