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archangel
Questions and answers by visitors named
archangel
Questions (1)
Can anyone help? i severly need this. Please and very much thank you.
Ma famille et moi, nous aimons beaucoup être dehors. Quand
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Answers (1)
differentiate x^2+xy+y^2 f'= 2x+y+xy'+2yy' f' =2(1)+(1)+(1)y'+2(1)y' f'= 3+3y' -3=3y' y'=-1 to find tangent line, y-y1=m(x-x1) y-1= -1(x-1) y-1= -x+1 x+y= 1+1 x+y=2 answer: x+y=2
