Set < String > function ( ) { return variables . keySet ( ) ; }
returns the set of variable names in the system . concode_field_sep double constant concode_elem_sep double[] values concode_elem_sep double[] coefficients concode_elem_sep List<Equation> equations concode_elem_sep TreeMap<String,Integer> variables concode_field_sep Equation createEquation concode_elem_sep void subConstant concode_elem_sep void addCoefficient concode_elem_sep void printEquations concode_elem_sep double getAbsoluteError concode_elem_sep double getAverageError concode_elem_sep double getLeftHandSide concode_elem_sep void removeEquation concode_elem_sep List<Equation> getEquations concode_elem_sep void printStatistics concode_elem_sep void addEquation concode_elem_sep Equation getMaximumErrorEquation concode_elem_sep double getConstant concode_elem_sep Solution solveLeastSquares concode_elem_sep double getCoefficient concode_elem_sep void setConstant concode_elem_sep void multiply concode_elem_sep int getVariableIndex concode_elem_sep double getSignedError concode_elem_sep void clear concode_elem_sep void subCoefficient concode_elem_sep double getMaximumError concode_elem_sep String getVariableName concode_elem_sep int getVariable concode_elem_sep Solution solveWithSVD concode_elem_sep void addConstant concode_elem_sep double getValue concode_elem_sep void print concode_elem_sep void setCoefficient