An object oscillates as it moves along the x-axis. Its displacement varies with time according to the equation... (see description for full problem)

Question

An object oscillates as it moves along the x-axis. Its displacement varies with time according to the equation x=4cos(pi t + pi/4) where t= time in seconds and x= displacement in meters What is the displacement between t=0 and t=1 second?

Answer 1

Plug t = 0 then t = 1 into the displacement formula and use your calculator to compute the answer.