kevin88 0 Newbie Poster

Hello

would anyone be able to help me to understand how the following answer is derived?

Given
R < A= {V,W,X,Y,Z},

Gamma = {V -> Y,  YW -> Z 
                    Y -> W}>

RTP VWY -> Z and VXY ->Z

Answer:
augment 3 by Y Y -> W

Thank you