- $ {M_3}\\\left( { - \\\frac{1}{4};1} \\\right)$.
- $ {M_2}\\\left( { - \\\frac{1}{2};2} \\\right)$.
- $ {M_1}\\\left( {\\\frac{1}{2};2} \\\right)$.
- $ {M_4}\\\left( {\\\frac{1}{4};1} \\\right)$.