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Subject: Re: =?ISO-2022-JP?Q?Quiz=5F06iv2004=1B$B!J2rEz!K=1B(B?=
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Xref: ccsf.homeunix.org fj.sci.math:903

トンデモYuzuru痰の相手してたら、入力ミスしちゃったよ。ヽ(＾。＾)ノ

積の微分法 dy/dt＝x(dz/dt)＋z(x/dt) ----> 積の微分法 d(xz)/dt＝x(dz/dt)＋z(dx/dt)