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QuadExpr()
QuadExpr ( expr = None )
Quadratic expression constructor. Note that you should generally use overloaded operators instead of the explicit constructor to build quadratic expression objects.
Arguments:
expr (optional): Initial value of quadratic expression. Can be a LinExpr or a QuadExpr. If no argument is specified, the initial expression value is 0.
Return value:
A quadratic expression object.
Example usage:
expr = QuadExpr() expr = QuadExpr(2*x) expr = QuadExpr(x*x + y+y)
