From a group of 8 boys and 3 girls, a commitee of 5 members to be formed. Find the probability that 2 particular girls are included in the committe is
Equation of the plane passing through (- 2, 2, 2) and (2, - 2, - 2) and perpendicular to the plane 9x - 13y - 3z = 0 is
5x + 3y + 2z = 0
5x - 3y + 2z = 0
5x - 3y - 2z = 0
5x + 3y - 2z = 0
Form the differential equation of all family of lines y = mx ± eliminating the arbitrary m constant 'm' is
If 'f' is the angle between the lines ax2 + 2hxy + by2 = 0, then angle between x2 + 2xy sec + y2 = 0 is
A.
Angle between the lines ax2 + 2hxy + by2 = 0 is