Engineer & Medical

Quadratic Equation question bank (Maths)

Practice 1,353 free Engineer & Medical Maths - Quadratic Equation questions with answers and step-by-step solutions.

Q1.

Consider the quadratic equation $(n^2 - 2n + 2)x^2 - 3x + (n^2 - 2n + 2)^2 = 0$, $n \in \mathbb{R}$. Let $\alpha$ be the minimum value of the product of its roots and $\beta$ be the maximum value of the sum of its roots. Then the sum of the first six terms of the G.P., whose first term is $\alpha$ and the common ratio is $\dfrac{\alpha}{\beta}$, is :

(A)
$\dfrac{61}{37}$
(B)
$\dfrac{121}{81}$
(C)
$\dfrac{364}{243}$
(D)
$\dfrac{1093}{729}$
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Q2.

Let $e_1$ and $e_2$ be two distinct roots of the equation $x^2 - ax + 2 = 0$. Let the sets $\{a \in \mathbb{R} : e_1 \text{ and } e_2 \text{ are the eccentricities of hyperbolas}\} = (\alpha, \beta)$, and $\{a \in \mathbb{R} : e_1 \text{ and } e_2 \text{ are the eccentricities of an ellipse and a hyperbola, respectively}\} = (\gamma, \infty)$. Then $\alpha^2 + \beta^2 + \gamma^2$ is equal to:

(A)
$18$
(B)
$22$
(C)
$26$
(D)
$34$
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