Math Problem Statement
座標空間内において3点A(1,0,0),B(0,1,0),C(0,0,1)が決定する平面に点P(3,a,3)(a>-5)から降ろした垂線の足をHとおく時、Hの座標、および点Hが△ABCの周および内部にあるための実数aの条件を求めよ
Solution
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Math Problem Analysis
Mathematical Concepts
Coordinate Geometry
Plane Equation
Vector Mathematics
Formulas
Equation of a plane
Vector addition
Theorems
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Suitable Grade Level
Advanced High School
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