# Shannons Expansion Theorem Help

#### testing12

Joined Jan 30, 2011
80
Can someone please help me to understand how the function in 6.5 is realized. I do not understand how they obtain (w2 OR w3) term, are there some intermediate steps I am missing?
Thnak you.

#### Maen

Joined Sep 16, 2011
12
$$f(w_1,w_2,w_3)=\overline{w_1}w_3+w_2\overline{w_3} f(w_1,w_2,w_3)=\overline{w_1}\cdot f(w_1=0,w2,w3)+w_1\cdot f(w_1=1,w2,w3)$$

Does sthis help?