Assertion: parabola's property | /r/HasProperty | derived equation
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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.