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Un article trouvé pour ce sujet.
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A family of circles |
2011-03-01 |
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steffi pose la question :
Find the equation of the family of the circle passing through the the point of intersection of x^2+ y^2 -4x-28=0 and x^2 +y^2 -4x-20+52=0; the member tangent to x=7.
Penny Nom lui répond. |
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