Rewrite the following model using the Tchebycheff method. {Min Z*={34.50} and w1=0.35,w2=0.65} Max Z_1=8x_1+3x_2-5x_3+2x_4 Max Z_2=7x_1-4x_2-5x_3-6x_4 2x_1+5x_2+3x_3+x_46 x_1+3x_2+x_3+4x_49 x_1,x_2,x_3,x_4 {0,1}