admit:
  We have M=100 english and math test scores
  and the corresponding college admission decision y.
  Consider the model
    y(x) = 1 / ( 1 + exp ( - w'x ) )
  Determine weights w, and apply to 3 new cases.

  Using ALPHA = 0.01
  Final W = (-2.68585,2.71628,2.79648)

  Graphics saved as "admit.png"
Student 1: wx =  1.5677978362117526   Y =  0.8274694457615037
Student 2: wx =  -0.018873136658649425   Y =  0.49528185588289786
Student 3: wx =  -0.30573870183992446   Y =  0.4241552127283534

admit:
  Normal end of execution.