The position of the particle at any given time t is given by x = √3 Cos 2t - Sin 2t.
To solve the equation of motion x+4x=0, we can use the general solution for simple harmonic motion, which is x = A Cos 2t + B Sin 2t, where A and B are arbitrary constants.
Given the initial conditions x = √3 and speed = 2.2, we can substitute these values into the general solution.
Plugging in the values, we get x = √3 Cos 2t - Sin 2t.
Therefore, the position of the particle at any given time t is given by x = √3 Cos 2t - Sin 2t.