Two collinear harmonic oscillations are made to superpose. If their displacements are represented as:

Two collinear harmonic oscillations are made to superpose. If their displacements are represented as:x1 = 2a cos t and x2 = 3a cos (t + )Calculate the amplitude of the resultant oscillation when the phase difference is(i) 2, (ii) 0, (iii) /2 and (iv) .(10)