The function f(x) = is
discontinuous at origin because is discontinuous there
continuous at origin
discontinuous at origin because both and are discontinuous there
discontinuous at the origin because is discontinuous there
The relation R = {(1, 1), (2, 2), (3, 3)} on the set { 1, 2, 3} is
symmetric only
reflexive only
an equivalence relation
transitrve only
The angle between the vectors a + b and a - b when a = (1, 1, 4) and b = (1, - 1, 4) is
45°
90°
15°
30°
The angle between the lines in
x2 - xy - 6y2 - 7x + 31y - 18 = 0 is
60°
45°
30°
90°
B.
45°