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Mathematics
Senior High
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怎解

Y y = = = = x + 5 40+5 (2)試求過點B(03)且與圓C:+(y+1)=1相切之切線方程式。 5 12-13+ (4+ 14 2
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Answers

yx_.
yx_.

先求該點到圓心的斜率 然後再乘以負1因為垂直斜率相乘為負1 求出該切線的斜率後再代入點斜式即可

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