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How to draw tangent line and normal vector where curve intersection has extremes?
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Pls see attached how to draw a tangent line where curve intersection has extremes and also normal vectors at that point in 2D and 3D.
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curve intersect...
The same question 
Hi, In this case, the Lagrange multiplier method is used.
https://www.geogebra.org/se...
-How to draw a tangent line where curve intersection has extremes and also normal vectors at that point in 2D and 3D:
You can e.g. view: https://www.geogebra.org/m/KzxcwVmX and use f: Tangent(A, curve).
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