Expression 2: StartFraction, "x" squared Over 4 squared , EndFraction plus StartFraction, "y" squared Over 4 squared , EndFraction less than or equal to 1 "k" left brace, StartFraction, "x" squared Over 1.7 5 squared , EndFraction plus StartFraction, "y" squared Over 1.7 5 squared , EndFraction greater than or equal to 1 , right bracex242+y242≤1kx21.752+y21.752≥1
2
Expression 3: StartFraction, "x" squared Over 0.7 5 squared , EndFraction plus StartFraction, "y" squared Over 0.7 5 squared , EndFraction less than or equal to 1 "k" left brace, StartFraction, "x" squared Over 0.2 5 squared , EndFraction plus StartFraction, "y" squared Over 0.2 5 squared , EndFraction greater than or equal to 1 , right bracex20.752+y20.752≤1kx20.252+y20.252≥1
3
Expression 4: "k" equals left bracket, 1 , 1 , 1 , 1 , right bracketk=1,1,1,1