Assertion: parabola's equation | /r/HasProperty | a
Facets:
Source sentences:
text: This property can be derived, too, if one represents the semicubical parabola by homogeneous coordinates: In equation (A) the replacement x = x 1 x 3 , y = x 2 x 3 {\displaystyle x={\tfrac {x_{1}}{x_{3}}},\;y={\tfrac {x_{2}}{x_{3}}}} (the line at infinity has equation x 3 = 0 {\displaystyle x_{3}=0} .) and the multiplication by x 3 3 {\displaystyle x_{3}^{3}} is performed.