Now comput A * ( B * r ) for evaluating expression A * ( B * r ) - ( C * r )
axbr = [ 0 ] * N NEW_LINE for i in range ( 0 , N ) : NEW_LINE INDENT for j in range ( 0 , N ) : NEW_LINE INDENT axbr [ i ] = axbr [ i ] + a [ i ] [ j ] * br [ j ] NEW_LINE DEDENT DEDENT