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Relation b/w roots & the coefficients of quadratic equations Quiz

MCQ: If a < 0, then function ƒ(x) = ax² + bx + c has a maximum value value at

1. x = a/2b
2. x = -a/2b
3. x = -b/2a
4. None of Above

C

Online Math Learning Quiz

MCQ: Cosα =

1. ±√(1 - cos2α)/2
2. ±√(1+ cos2α);/2
3. ±(√(1)+ sin2α)/2
4. None of Above

B

Inverse of a Function Quiz

MCQ: If f is a bijective function, then f-1ƒ(x)) =

1. 0
2. 1
3. 2
4. x

D

Period of Trigonometric Functions Quiz

MCQ: Period of csc(x) is

1. π

B

Online Math Learning Quiz

MCQ: Cos20°cos40°cos80° =

1. ¹⁄16
2. ¹⁄8
3. ¹⁄4
4. None of Above

B