Mathematics
Senior High
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確認問題 28
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1 円(x-1)^2+(y-2)^=1と直線 2x-y+m=0が共有点をもつとき,定数 m の値の範囲を求めよ。
2 x²+y^=r²と直線 x-3y-5=0が接するとき,円の半径rの値を求めよ。
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