Class X

What is the amplitude of f(x) = sin(x) + cos(x)?
  1. √2
  2. √2 / 2
  3. 2 √2
  4. 2
What is the range of the function f(x) = - 6 cos(π x - π/2) + 2?
  1. [-6 , 6]
  2. [-4 , 8]
  3. [0 , 8]
  4. [-6 , 0]
What is the range of the function f(x) = - 4 cos(2x - 3)?
  1. (0,4)
  2. [0,4]
  3. (-4,4)
  4. [-4,4]
What is the period of f(x) = 0.5 sin(x) cos(x)?
  1. 0.5
  2. 2 π
  3. π / 2
  4. π
What is the period of the trigonometric function given by f(x) = 2 sin(5 x)?
  1. π / 5
  2. 2 π / 5
  3. 5 π
  4. π
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LKG - 12th

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