How to draw a graph for function with constraints?

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Trang To 2020-7-1

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评论： Trang To 2020-7-2

采纳的回答： Matt J

How can I draw the contour plot of the function z = 3x + 4y and the constraint curve x^2 + 4xy +5y^2 = 10 in the same figure ?

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Matt J 2020-7-1

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在 MATLAB Online 中打开

 fimplicit(@(x,y) x.^2 + 4*x.*y +5*y.^2 - 10,'r'); hold on; fcontour(@(x,y) 3*x+4*y) ; hold off

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Trang To 2020-7-2

thank you so much

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Gurpreet Singh 2020-7-1

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Hi Trang,

The following link might help you.

https://in.mathworks.com/matlabcentral/answers/487683-how-to-draw-a-3d-graph-with-constraints?s_tid=answers_rc1-1_p1_BOTH

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MATLAB Graphics 2-D and 3-D Plots Contour Plots

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