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oguzanildi
Can someone explain me why we take square of [yi-(axi+b)] and then how we simplify the 2 from the deviation of that equation -least square session 29-
We taking the square cause we need absolute value of distance. I don't understand your second question. If it's about taking deriviative try to look "Single variable calculus". If about simplifying just open brackets.
thank you, I meant the second one,simplifying, I got it
we can remove the 2 because we are setting the partials equal to 0. Therefore we can divide both sides by 2.