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Question: Ploting function and tangents

Question:Ploting function and tangents

sterlin9 57 Maple
example graph
October 24 2008
0

Is there any command to find an tangent for a fuction in maple. My example here is f(x,y) = x- x - y + y and graphing the function and it's tangent at plane (1,1).

Recently, Robert I helped me with a question: To approximate f(x,y) = y/ xby a polynomial of degree 6 in x -1 and y + 1. He said answer to this is achieved by following: mtaylor (y / x, [x=1,y=-1],7);         If this is correct, what does the 7 do?

 

thx for any help
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