code: def test_more_step_and_impulse_2(self, xp, scp):
      # Check an impulse response with an initial condition.
      lambda1 = 0.5
      lambda2 = 0.75
      a = xp.array([[lambda1, 0.0], [0.0, lambda2]])
      b = xp.array([[1.0, 0.0], [0.0, 1.0]])
      c = xp.array([[1.0, 1.0]])
      d = xp.array([[0.0, 0.0]])
  
      n = 10
  
      x0 = xp.array([1.0, 1.0])
      ti, yi = scp.signal.dimpulse((a, b, c, d, 1), n=n, x0=x0)
      return ti, *yi
  
imports: from math import sqrt, pi
  from pytest import raises
  import cupy
  from cupy import testing
  import cupyx.scipy.signal
label_desc: Use image node_id 20 for calling the TestDLTI obj's underlying member method code with example usage: obj.test_more_step_and_impulse_2(xp, scp) and returns: ti,  unknown