SandraMae2443 SandraMae2443
  • 06-06-2023
  • Mathematics
contestada

The displacement of the bob of a pendulum is given by d(t) = 1.3e-0.1t cos t+4.5, where d is the 2π 1.5 distance from a wall in metres, and t is the time in seconds. What is speed of the pendulum at 4 seconds? Answer to two decimal places. (4 marks)

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