Q 2 and 3 EXERCISE 13.1

A(-2, 2, 3) and B(13, -3, 13) and L is a line through A. Q. Equation of a line L, perpendicular to the line AB is

A(-2, 2, 3) and B(13, -3, 13) and L is a line through A. Q. Coordinate of the line point P which divides the join of A and B in the ratio 2:3 internally are

Let A = {1, 2, 3} and R = {(1, 1), (2,2), (1, 2), (2, 1), (1,3)} then R is

Harmonic conjugate of the point (5, 13) with respect to (2,-5) and (3,1) is (1,(13)/5) (b) ((13)/5,1) ((13)/5,7/5) (d) (-7/5,(13)/5)

Show that the point A (1,-1,3), B ( 2,-4,5) and C ( 5,-13,11) are collinear.

Three equal charges are placed on the three corners of a square. If the force between q_(1) and q_(2) is F_(12) and that between q_(1) and q_(3) is F_(13) , then the ratio of magnitudes (F_(12)//F_(13)) is

If f(x) = px +q, where p and q are integers f (-1) = 1 and f (2) = 13, then p and q are

Find the product of : 4/25 p^(2) q^(2) and -7 9/13 pq^(3)

If P(-1,5) is hormonic conjugate of Q(-13,9) with respect to A and B. If A=(5,3) then find the length AB

The set of all values of a for which both roots of equation x^2-2ax+a^2-1=0 lies between -2 and 4 is (A) (-1,2) (B) (1,3) (C) (-1,3) (D) none of these