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	<title>tz034 | 数学の星</title>
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	<description>数とはなにか、無限とはなにか</description>
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		<title>曲線の二つの接線が４５°で交わる条件を求める</title>
		<link>https://math-jp.net/2017/11/05/tz034/</link>
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		<dc:creator><![CDATA[猫野 流星]]></dc:creator>
		<pubDate>Sun, 05 Nov 2017 13:51:07 +0000</pubDate>
				<category><![CDATA[猫野の微分積分]]></category>
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					<description><![CDATA[[msg#wsiki] &#160; 目次 問題解答（解き方）答え 問題 曲線\(y=3 \log x\)の上の２点\(P,Q\)の\(x\)座標をそれぞれ\(a,b\)とし、\(a&#60;b\)とする。 \(P,Q\) [&#8230;]]]></description>
		
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