Math Problem Statement
dada uma parabola de equação y^2 = 9x, pede-se a: as coodenadas do foco; b: a equação da direttriz
Solution
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Math Problem Analysis
Mathematical Concepts
Parabolas
Vertex form
Focus and Directrix
Formulas
Standard form of a parabola: y^2 = 4px
Equation of the directrix: x = -p
Theorems
-
Suitable Grade Level
High School
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