i think there is a very small mistake in the graph of (a_i*x-b)^2. The confusion area is bound is not a_i/b_i but b_i/a_i####[['confusion area', 'Mathematical_Related_Concept', 'NEU'], ['graph of (a_i*x-b)^2', 'Mathematical_Related_Concept', 'NEU'], ['a_i/b_i', 'Mathematical_Related_Concept', 'NEU'], ['b_i/a_i', 'Mathematical_Related_Concept', 'NEU']]