anonymous
  • anonymous
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-
OCW Scholar - Multivariable Calculus
katieb
  • katieb
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anonymous
  • anonymous
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.
anonymous
  • anonymous
thank you, I meant the second one,simplifying, I got it
anonymous
  • anonymous
we can remove the 2 because we are setting the partials equal to 0. Therefore we can divide both sides by 2.

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