Differentiation Set 2

✘ ✘ ✘ All of these ✔ NULL ✔ NULL NULL

02-Feb ✘ 1 ✘ Does not exist ✔ NULL ✔ NULL NULL

✘ ✘ ✘ ✔ NULL ✔ NULL NULL

✘ ✘ ✔ NULL ✔ NULL NULL

✘ ✘ ✘ ✔ NULL ✔ NULL NULL

1 in the whole plane ✘ in the whole plane ✘ 1 in the 2nd and 3rd quadrants of the plane ✘ in the 3rd and 4th quadrants of the plane ✔ NULL ✔ NULL NULL

✘ ✘ ✘ ✔ NULL ✔ NULL NULL

1 ✘ ✘ ✔ NULL ✔ NULL NULL

✘ ✘ ✘ ✔ NULL ✔ NULL NULL

✘ ✘ ✘ None of these ✔ NULL ✔ NULL NULL