var a : Vector3 = Vector3 (1, 2, 3);
var b : Vector3 = Vector3 (4, 3, 2);
print (Vector3.Max(a,b)); // prints (4.0,3.0,3.0)

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public Vector3 a = new Vector3(1, 2, 3);
    public Vector3 b = new Vector3(4, 3, 2);
    void Example() {
        print(Vector3.Max(a, b));
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public a as Vector3 = Vector3(1, 2, 3)

    public b as Vector3 = Vector3(4, 3, 2)

    def Example():
        print(Vector3.Max(a, b))