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二次曲面の接平面
Author:
Bunryu Kamimura
接平面の式はax_1x+by_1y+cz_1z=1となる。A（x_1,y_1.z_1)
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standingwave-reflection-fixed
sine-wave
接点の作る円は内接円
対数螺旋
正１７角形 作図 regular 17-gon 2
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４次方程式の根の図
円柱と円錐
ensuikyokusen
Q4-1
判別式の図形的なイメージ
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Sine
Rhombus
Equilateral Triangles
Probability
Stochastic Process or Random Process