If are the roots of the equation x3 + px2 + qx + r = 0, then the coefficient of x in the cubic equation whose roots are
2q
q2 + pr
p2 - qr
r(pq - r)
Given that,
Arithmetic Progression
Geometric Progression
Harmonic Progression
Arithmetico- geometric Progression
If a, b, c and d ∈ R such that a2 + b2 = 4 and and if (a + ib) = (c + id)2 (x + iy), then x2 + y2 is equal to
4
3
2
1
A.
4
If a, b and c form a geometric progression with common ratio r, then the sum of the ordinates of the points of intersection of the line ax + by + c = 0 and the curve x + 2y2 = 0 is
r