Math Problem Statement
円x2乗+y2乗ー7=0と直線x+y-k=0が異なる2点で交わっているときkの値を求めよ
Solution
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Math Problem Analysis
Mathematical Concepts
Geometry
Quadratic Equations
Discriminant
Formulas
円の方程式: x^2 + y^2 = r^2
直線の方程式: y = k - x
判別式: D = b^2 - 4ac
Theorems
Discriminant Theorem for Quadratic Equations
Suitable Grade Level
High School (Grades 10-12)
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