Sketch the graph using matlab

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Ta Duc
Ta Duc 2021-7-4
评论： Ta Duc 2021-7-5
Draw the graph of f and its tangent plane at the given point. (Use your computer algebra system both to compute the partial derivatives and to graph the surface and its tangent plane.) Then zoom in until the surface and the tangent plane become indistinguishable. f(x, y)=[xy sin(x-y)]/[1+x^2+y^2], and the given point(1, 1, 0)

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回答（2 个）

Sulaymon Eshkabilov
Start with fimplicit(@(x, y)...)
  2 个评论
Ta Duc
Ta Duc 2021-7-4
Could u pls specify your answer 😀
Ta Duc
Ta Duc 2021-7-4
i'm a chemical engineering so i'm not good at this.

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Sulaymon Eshkabilov
f=@(x, y)(x.*y.*sin(x-y)./(1+x.^2+y.^2));
syms x y
dFxy = diff(f,x)+diff(f, y);
fimplicit3(f); hold on; fimplicit(dFxy, 'k', 'linewidth', 2)
shg
  2 个评论
Ta Duc
Ta Duc 2021-7-5
Can u explain for me why the code you give me showed the different graph with the answer key?

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