Q3 of 29 Page 1

What is the distance of the point (p, q, r) from the x-axis?

We know, any point on x-axis will be in the form (a, 0, 0)


Also, the point at shortest distance from (p, q, r) on x-axis will be (p, 0, 0)


Hence, by using distance formula between two points (x1, y1, z1) and (x2, y2, z2) is





More from this chapter

All 29 →
1

What is the principal value of ?

 2

A and B are square matrices of order 3 each, |A| = 2 and |B| = 3. Find |3AB|.

 4

Let f: R → R be defined by f(x) = 3x2- 5 and g : R → R be defined by g(x) = . Find gof.

 5

How many equivalence relations on the set {1,2,3} containing (1,2) and (2,1) are there in all? Justify your answer.