Class X

What is the amplitude of the function f(x) = -3cos(πx)?
  1. 3
  2. -3
  3. π
  4. 2
What is the amplitude of f(x) = sin(x) + cos(x)?
  1. √2
  2. √2 / 2
  3. 2 √2
  4. 2
What is the phase shift of the function f(x) = 7sin(2x - π / 3)?
  1. π / 3
  2. π / 6
  3. - π / 6
  4. - π / 3
What is the amplitude of f(x) = 4 sin(x) cos(x)?
  1. 4
  2. 3
  3. 2
  4. 1
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]
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LKG - 12th

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