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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cbrt (x):
 """Returns the cube root of x."""

  if x >= 0: 
    return   math.pow(x     , 1.0 / 3.0)
  else:
    return - math.pow(abs(x), 1.0 / 3.0)