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Question: can someone explain to me why the direction of the...

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Can someone explain to me why the direction of the vector representation of the tangent line is <2,-1> and <3, -1> rather than <2,1> and <3, 1>. I do not think I understand how to represent a line in a vector form.  

At the point (1,1) The tangent line to the curve y -is y 2x-1 The tangent line to the curve y-r is y 3x-2 The direction of the vectors representing the tangent lines at (1,1) are (2-1) and The angle between two vectors (2,-1)and (3,-1) s cos 510 50 And cos - /50 cos V50 Activate Wind Therefore, the acute angle between the two given curves at (1, 1is about 8.10

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