共50条信息
直线\(x-2y-3=0\)与圆\(C:{{(x-2)}^{2}}+{{(y+3)}^{2}}=9\)交于\(E\;,F \)两点,则弦长\({ }\!\!|\!\!{ }EF{ }\!\!|\!\!{ =}(\) \()\)
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