If one AM 'A' and two GM p and q are inserted between two given numbers, then. find the value of .
A
2A
3A
4A
If the roots of the equation x2 + ax + b = 0 are c and d, then one of the roots of the equation x2 + (2c + a)x + c2 + ac + b = 0
c
d - c
2d
2c
The values of constants a and b so that
are
a = 0, b = 0
a = 1, b = - 1
a = - 1, b = 1
a = 2, b = - 1
B.
a = 1, b = - 1
A line making angles 45° and 60° with the positive directions of the axes of x and y makes with the positive direction of z-axis, an angle of
60°
120°
60° or 120°
None of these
If the axes are shifted to the point (1, - 2) without solution, then the equation 2x2 + y2 - 4x + 4y = 0 becomes
2X2 + 3Y2 = 6
2X2 + Y2
X2 + 2Y2
None of the above
In a group ( G, *), then equation x * a = b has a
unique solution b * a-1
unique solution a-1 * b
unique solution a-1 * b-1
many solutions