Mathematics
Senior High
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3. -2x=4でも大丈夫ですか?
方程式を答えろと問われた時は必ずしもx=で答えなくてもいいんでしょうか?
192 次の円上の点Pにおける接線の方程式を求めよ。
(1)
x2+y2=25,P(4,3)
*(2) x2+y2=5,
*(3)
x2+y2=4, P(-2, 0)
(4)
x2+y2=9,
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