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# Relation b/w roots and the coefficients of quadratic equations MCQ (Multiple Choice Questions) PDF - 154

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The MCQs: If a > 0, then the function ƒ(x) = ax² + bx + c has a minimum value at; "Relation b/w roots & the coefficients of quadratic equations" App Download (iOS & Android) Free with answers x = -a/2b, x = a/2b, x = -b/2a to study online tutor courses. Practice quadratic equations questions and answers, Google eBook to download free sample for GRE subject tests.

## Relation b/w roots & the coefficients of quadratic equations Questions and Answers : Quiz 154

MCQ 766: If a > 0, then the function ƒ(x) = ax² + bx + c has a minimum value at

A) x = a/2b
B) x = -a/2b
C) x = -b/2a
D) None of Above

MCQ 767: The period of 3sin(3x) is

A) π/3
B) π/2
C) 2π/3
D) π

MCQ 768: If ω is the imaginary cube root of unity, then the quadratic equation with roots -3ω and -3ω² is

A) x² + 3x + 9 = 0
B) x² - 3x + 9 = 0
C) x² - 2x + 4 = 0
D) x² + 2x + 4 = 0

MCQ 769: Partial fractions of 1/(x²-4) are equivalent to

A) A/(x+2) + B/(x-2)²
B) A/(x-2) + B/(x+2)²
C) A/(x+2) + B/(x-2)
D) None of Above

MCQ 770: If ƒ(x) = √(x² +1, then domain of f is

A) [-∞,-1]∪[1,∞]
B) [-∞, ∞]
C) [-∞,-2]∪[2,∞]
D) [-∞,-2]∪[3,∞]

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