aE △w;=-17 E (t1-O 2 kEoutputs aE ae, ar net d OE anet. aw anet oed aEd oo ne Oo. Onet ae,a 1 ∑(k-0) k∈ outputsj i j d j i j j d j i d x net E w net net E w E   =     =   ji d ji w E w    = −   → = − k outputs d k ok E w t 2 ( ) 2 1 ( ) j j net o     =   j d j d o E net E 2 ( ) 2 1   −   =   k outputs k k j j d t o o o E