Re: HW6 - Q 2 thru 6 - make sure you apply abs() to the last 2 features!
Oh no!
Hindsight is 20/20, as they say, but the "x1 + x2" and "x1 - x2" components (that is without taking the absolute value) would seem a little redundant. As linear combinations of x1 and x2, they wouldn't contribute to the "non-linearity" of the transformation (since x1 and x2 are already in the given transformation).
Anyway, sorry about those points...
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