Initializing help system before first use

# problem.BTran

Purpose
Post-multiplies a (row) vector provided by the user by the inverse of the current basis.
Topic areas
Linear Algebra, LP, Optimizer
Synopsis
`vec = problem.BTran(vec)`
Argument

vec: list[float] | Double array of length ROWS containing the values by which the basis inverse is to be multiplied.

Related controls
Double

ETATOL | Tolerance on eta elements.

Return value

vec: list[float] | The result of the multiplication

Further information
If the matrix is in a presolved state, problem.BTran works with the basis for the presolved problem.
Related topics
problem.FTran.
Parent Topic Xpress problem object methods

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