Gets the error associated with the mimimum just computed.

Gets the estimated Hessian matrix for the target function. The Hessian matrix for a function is the square matrix of second-order partial derivative.

Gets the number of iterations used in the estimate of the mimimum just computed.

Gets and sets the maximum number of iterations used in computing minima estimates.

Returns true if the minimum just computed stopped because the maximum number of iterations was reached; otherwise, false.

Gets and sets the error tolerance used in computing minima estimates.

Returns true if the minimum just computed stopped because the error tolerance was reached; otherwise, false.