1) √61/9 2) 2√17/9 3) √34/9 4) 2√13/9 Solution: (4) 2√13/9 Since ɑ + β = - q / p and ɑ β = r / p It is given that 2q = p + r and 1 / α + 1 /... View Article
1) AP 2) GP 3) HP 4) None of these Solution: (1) AP Let p and q be the roots of the equation ax2 + bx + c = 0 Then p + q = -b / a pq = c / a... View Article
1) r = pq 2) r = 2p3 + pq 3) r = p2q 4) None of these Solution: (1) r = pq Let α, - α, β be the three roots. α + (- α) + β = p ⇒ β = p But β... View Article
1) b = a + c 2) b = c 3) c = a + b 4) a = B + c Solution: (3) c = a + b It is given that tan (P/2) and tan (Q/2) are the roots of ax2 + bx +... View Article
1) ∆ ≠0 2) b/∆ = 0 3) c∆ = 0 4) bc ≠0 Solution: (3) c∆ = 0 Since α + β = b / a, αβ = c / a Given that α + β, α2 + β2 and α3 + β3 are in... View Article