JEE Main 2022 (Online) 24th June Morning Shift | Quadratic Equation and Inequalities Question 60 | Mathematics | JEE Main - ExamSIDE.com

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1

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

+4

-1

If the sum of the squares of the reciprocals of the roots $$\alpha$$ and $$\beta$$ of

the equation 3x² + $$\lambda$$x $$-$$ 1 = 0 is 15, then 6($$\alpha$$³ + $$\beta$$³)² is equal to :

A

18

B

24

C

36

D

96

2

JEE Main 2021 (Online) 1st September Evening Shift

MCQ (Single Correct Answer)

+4

-1

The numbers of pairs (a, b) of real numbers, such that whenever $$\alpha$$ is a root of the equation x² + ax + b = 0, $$\alpha$$² $$-$$ 2 is also a root of this equation, is :

A

6

B

2

C

4

D

8

3

JEE Main 2021 (Online) 31st August Evening Shift

MCQ (Single Correct Answer)

+4

-1

The sum of the roots of the equation

$$x + 1 - 2{\log _2}(3 + {2^x}) + 2{\log _4}(10 - {2^{ - x}}) = 0$$, is :

A

log₂ 14

B

log₂ 11

C

log₂ 12

D

log₂ 13

4

JEE Main 2021 (Online) 31st August Morning Shift

MCQ (Single Correct Answer)

+4

-1

cosec18$$^\circ$$ is a root of the equation :

A

x² + 2x $$-$$ 4 = 0

B

4x² + 2x $$-$$ 1 = 0

C

x² $$-$$ 2x + 4 = 0

D

x² $$-$$ 2x $$-$$ 4 = 0

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