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) = - 4 cos(2x - 3)?
  1. (0,4)
  2. [0,4]
  3. (-4,4)
  4. [-4,4]
What is the amplitude of the function f(x) = -3cos(πx)?
  1. 3
  2. -3
  3. π
  4. 2
What is the period of f(x) = 0.5 sin(x) cos(x)?
  1. 0.5
  2. 2 π
  3. π / 2
  4. π
Which of the following functions has the greatest period?
  1. f(x) = 20 sin(2x-π/2)
  2. f(x) = - sin(πx)
  3. f(x) = 2 sin(0.1 x)
  4. f(x) = - sin(0.1 π x)
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LKG - 12th

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