Question

Answer this question correctly

Answer 1

Answer:

hello......... please thanks on this answee

Answer 2

Answer:

3

Explanation:

= 4 cos² (t/2) sin (1000 t)

  =  2 * 2 cos²(t/2)sin (1000 t)

  = 2 * (1 + cos t) sin (1000 t)

  = 2 sin (1000 t) + 2 cos t sin (1000 t)

  = 2 sin (1000 t) + sin [(1000+1)t] +sin [(1000−1)t]

  =  2 sin (1000 t) + sin (1001)t +sin (999)t

  = y₁ + y₂ + y₃

Therefore,

Superposition of three waves.

Hope it helps!