Consider the surface $S$ in $\Bbb R^3$ given by the graph of $f(x,y)$. Find the intersection point of the tangent planes.
61307
Consider the surface $S$ in $\mathbb{R}^ 3$ given by the graph of $f(x, y) = xy^2 − 2y^2 + e^x $.
115737
Tangent and Normal lines that pass through the origin
136204
Intersection of a function having increasing derivative with tangent line
142122
Finding equation of the parabola from tangent information
49845
For an ellipse with minor radius $b$, show that the product of distances from the foci to any tangent line is $b^2$
112727
Surfaces in $\mathbb P^3$ not containing any line
98971
Why is $\pi r^2$ the surface of a circle
130700
Calculate intersection of a line with a plane
86256
Intersection point of line segments
63074
The equation of a family of circles passing through two given points
113680
Finding intersection of two graphs
120641
Intersection of three vector subspaces
59804
Show that the plane $\{su+tv|s,t \in\Bbb R\}$ in $\Bbb R^3$ is equal to the null space of some element of $(\Bbb R^3)^{*}$.
71074
The locus of the intersection point of two perpendicular tangents to a given ellipse
70303
Parametric form of a plane
37407
Area of intersection of two Annulus
154864
Finding the radius of a third tangent circle