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Here is the complete summary table for all 13 surfaces we have discussed, organized with their first and second fundamental coefficients and normal vectors.

Surface Type & Vector Equation \(\vec{r}\) First Fundamental \((E, F, G)\) Normal Vector \(\vec{N}\) Second Fundamental \((L, M, N)\)
1. Monge's Form
\((x, y, f(x,y))\)
\(E = 1+f_1^2\)
\(F = f_1 f_2\)
\(G = 1+f_2^2\)
\(\frac{(-f_1, -f_2, 1)}{H}\) \(L = \frac{f_{11}}{H}, M = \frac{f_{12}}{H}\)
\(N = \frac{f_{22}}{H}\)
2. Revolution
\((u\cos v, u\sin v, f(u))\)
\(E = 1+f_1^2\)
\(F = 0\)
\(G = u^2\)
\(\frac{(-f_1\cos v, -f_1\sin v, 1)}{\sqrt{1+f_1^2}}\) \(L = \frac{f_{11}}{\sqrt{1+f_1^2}}, M = 0\)
\(N = \frac{uf_1}{\sqrt{1+f_1^2}}\)
3. Conoidal
\((u\cos v, u\sin v, f(v))\)
\(E = 1\)
\(F = 0\)
\(G = u^2+f_2^2\)
\(\frac{(f_2\sin v, -f_2\cos v, u)}{H}\) \(L = 0, M = \frac{-f_2}{H}\)
\(N = \frac{uf_{22}}{H}\)
4. Right Helicoid
\((u\cos v, u\sin v, cv)\)
\(E = 1, F = 0\)
\(G = u^2+c^2\)
\(\frac{(c\sin v, -c\cos v, u)}{H}\) \(L = 0, M = \frac{-c}{H}\)
\(N = 0\)
5. Plane
\((u, v, u+v)\)
\(E = 2, F = 1\)
\(G = 2\)
\(\frac{(-1, -1, 1)}{\sqrt{3}}\) \(L = 0, M = 0\)
\(N = 0\)
6. Saddle (A)
\((u, v, uv)\)
\(E = 1+v^2, F = uv\)
\(G = 1+u^2\)
\(\frac{(-v, -u, 1)}{H}\) \(L = 0, M = \frac{1}{H}\)
\(N = 0\)
7. Saddle (B)
\((u+v, u-v, uv)\)
\(E = 2+v^2, F = uv\)
\(G = 2+u^2\)
\(\frac{(u+v, v-u, -2)}{H}\) \(L = 0, M = \frac{-2}{H}\)
\(N = 0\)
8. Paraboloid
\((u, v, u^2+v^2)\)
\(E = 1+4u^2, F = 4uv\)
\(G = 1+4v^2\)
\(\frac{(-2u, -2v, 1)}{H}\) \(L = \frac{2}{H}, M = 0\)
\(N = \frac{2}{H}\)
9. Cylinder
\((a\cos u, a\sin u, v)\)
\(E = a^2, F = 0\)
\(G = 1\)
\((\cos u, \sin u, 0)\) \(L = -a, M = 0\)
\(N = 0\)
10. Cone
\((v\cos u, v\sin u, v)\)
\(E = v^2, F = 0\)
\(G = 2\)
\(\frac{(\cos u, \sin u, -1)}{\sqrt{2}}\) \(L = \frac{-v}{\sqrt{2}}, M = 0\)
\(N = 0\)
11. Sphere
\((\sin u\cos v, \dots)\)
\(E = 1, F = 0\)
\(G = \sin^2 u\)
\(\vec{r}\) (Position Vector) \(L = -1, M = 0\)
\(N = -\sin^2 u\)
12. Hyperboloid
\(2z=7x^2+6xy-y^2\)
\(E = 1, F = 0\)
\(G = 1\)
\((0, 0, 1)\) \(L = 7, M = 3\)
\(N = -1\)
13. Minimal
\(e^z\cos x = \cos y\)
\(E = \sec^2 x\)
\(F = -\tan x\tan y\)
\(G = \sec^2 y\)
\(\frac{(-\tan x, \tan y, 1)}{H}\) \(L = \frac{\sec^2 x}{H}, M = 0\)
\(N = \frac{-\sec^2 y}{H}\)

Note: \(H = \sqrt{EG-F^2}\) represents the magnitude of the normal vector before normalization.

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