Æò¸éÀÇ ¹æÁ¤½Ä
<Á÷¼±ÀÇ ¹æÁ¤½Ä> Á¡A(x1, y1, z1)À» Áö³ª°í º¤ÅÍ u =(a, b, c)¿¡ ÆòÇàÇÑ Á÷¼±ÀÇ ¹æÀû½ÄÀº
<Æò¸éÀÇ ¹æÁ¤½Ä> 1. Á¡ (x1, y1, z1)À» Áö³ª°í, º¤ÅÍ v = ( a, b, c )¿¡ ¼öÁ÷ÀÎ Æò¸éÀÇ ¹æÁ¤½ÄÀº a(x - x1) + b(y - y1) + c(z - z1) = 0 -> ax + by + cz - (ax1 + by1 + cz1) = 0 -> ax + by + cz + d = 0 ¿©±â¼ a, b, c´Â ³ë¸Ö º¤ÅÍÀÇ ¼¼ ¼ººÐ, d´Â Æò¸é°ú ¿øÁ¡±îÁöÀÇ ÃִܰŸ®ÀÌ´Ù. 2. ¼¼ Á¡ A(x1, y1, z1), B(x2, y2, z2), C(x3, y3, z3)¸¦ Áö³ª´Â Æò¸éÀÇ ¹æÁ¤½Ä ax + by + cz + d = 0 a = y1(z2 - z3) + y2(z3 - z1) + y3(z1 - z2) d = -(x1(y2x3 - y3z2) + x2(y3x1 - y1z3) + x3(y1x2 - y2z1))
<Á¡°ú Æò¸é »çÀÌÀÇ °Å¸®> Á¡ (x0, y0, z0)¿¡¼ Æò¸é ax + by + cz + d = 0±îÁö °Å¸® h´Â
|