Four points A, B, C and D lie on a straight line in the X-Y plane, such that AB = BC = CD, and the length of AB is 1 metre. An ant at A wants to reach a sugar particle at D. But there are insect repellents kept at points B and C. The ant would not go within one metre of any insect repellent. The minimum distance in metres the ant must traverse to reach the sugar particle is
Correct Answer : B
In the X-Y plane, the area of the region bounded by the graph of |x + y| + |x – y| = 4 is
Which of the following lines does not pass through the point of intersection of the two lines 2lx + 3my+n= 0 and 3lx - 4my-n = O?
A function y = f(x) is said to be reflexive, if x = f(y). Which of the following is a reflexive function?