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linalg[leastsqrs] - least-squares solution of equations
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Calling Sequence
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leastsqrs(A, b)
leastsqrs(S, v)
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Parameters
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A
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matrix
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b
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vector
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S
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set of equations or expressions
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v
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set of names
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Description
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The call leastsqrs(A, b) returns the vector that best satisfies  in the least-squares sense. The result returned is the vector x which minimizes  .
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The call leastsqrs(S, v) finds the values for the variables in v which minimize the equations or expressions in S in the least-squares sense. The result returned is a set of equations whose left-hand sides are from v.
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For the linear case, if the third optional argument is 'optimize', the routine will find the optimal least square solution (i.e. the vector x with  being the smallest). At present, the matrix entries must be rationals.
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The command with(linalg,leastsqrs) allows the use of the abbreviated form of this command.
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