### Question:
Gaussian extends TransferFunction implements Serializable { @Override public double getOutput(double totalInput) { output = Math.exp(-Math.pow(totalInput, 2) / (2*Math.pow(sigma, 2))); return output; } Gaussian();  Gaussian(Properties properties); @Override double getOutput(double totalInput); @Override double getDerivative(double net); double getSigma(); void setSigma(double sigma);  }### Answer:
@Test public void testGetOutput() { double result = instance.getOutput(input); assertEquals(expected, result, FloatingAccuracy.ACCURACY); }