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let f(x, y, z) = (x^2)+(y^2)+(z^2)-4 g(x, y, z) = (z^2)+(x^2)-2 gradient f(x, y, z) = (2x, 2y, 2z) gradient f(1 , 根號2 , 1) = (2, 2根號2, 2) gradient g(x, y, z) = (2x, 0, 2z) gradient g(1, 根號2, 1) = (2, 0, 2) cos(angle) = (2, 2根號2, 2)‧(2, 0, 2) / [│(2, 2根號2, 2)│*│ (2, 0, 2)│] = 根號2/2 angle = 45度或π/4 2008-03-19 01:23:22 補充...

...: showtriggers_toggle * Draw normal maps: mat_ normalmaps 1 * Draw surface materials: mat_ normals 1 * Turn off bump mapping...

... divergent theorem we have volume integral over D of div(F) = surface integral overS of F(內積)n , where n is the unit outward normal vector to S. 5. F(內積)n=|F| |n| cos (theta) by inner product...

...有相關，茲嘗試翻譯如下 Furthermore, the electric field would have to be normal to the surface for the same reasons as before. Again, it would not make any difference...

1.The incidence,the light of reflection,and the normal are in the same surface . 2.The incidence and the light of reflection are either side of the normal ...

... be the boundary of R. Consider the surface integral ∫∫_B F dot n dA, (1...n dA + ∫∫_A F dot n dA (the normal of A is downward) = Answer...

F=(x^2, -2xy, z^2), divF=2x-2x+2z=2z ∫∫_S F‧ndA=∫∫∫_V (2z)dv =∫∫_W∫[1~2] 2zdz dxdy =∫∫_W (2^2-1^2) dxdy =3*(Area of W)=3A

...thick packing ring) (Shaft wear－leakage) (Replace with normal one) (強行置入厚墊圈) (心軸磨損–滲漏) (更換正常墊圈) (Flaw on shaft surface ) (Early wear - leakage) (Apply paper-sanding or ...