code: def mcma_error(Xest, R, symbs):
      return symbs.dtype.type(
          (R.real - Xest.real**2) * Xest.real
          + (R.imag - Xest.imag**2) * Xest.imag * 1j
      )
  
imports: import numpy
label_desc: Use image node_id 4 for calling a global function with example usage: mcma_error(Xest, R, symbs) and returns: symbs