对a,b∈R,记max{a,b}={a,a≥b或 b,a
对a、b∈R,记max{a,b}={(a,a≥b),(b,b
对a、b∈R,记max{a,b}=a,a≥b;b,a
对a,b∈R,记max{a,b}={(a,a≥b),(b,a
对a、b∈R,记max{a、b}={a a≥b; b a
对a,b∈R,记max{a,b}={a,a ≥b/b,a
对a,b∈R,记max{a,b}= {a,a≥b b,a
对a,b∈R,记max{a,b}={a,a≥b或 b,a
对a,b∈R,记max{a,b}=a,a≥b;b,a
对a,b∈R,记max{a,b}=a,a≥b;b,a
对a,b属于R,记max{a,b}= a,a≥b b,a
对于a,b∈R,记max{a,b}= {a,a≥b b,a
急、、对a、b∈R,记max{a,b}={【a,a≥b】【b,a