A Addores New member Joined Jan 21, 2020 Messages 1 Jan 22, 2020 #1 I’m not sure how my textbook goes from the middle equation to the bottom one. Just need some assistance regarding that.
I’m not sure how my textbook goes from the middle equation to the bottom one. Just need some assistance regarding that.
Dr.Peterson Elite Member Joined Nov 12, 2017 Messages 16,873 Jan 22, 2020 #2 They just factored out [MATH]\hat{\beta}_2[/MATH] from the last two terms.
