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訳が分かりません

お願いします。 Among the difficulties is the presence of terms like udu/dx, involving the product of velocities, which means that we cannot add two solutions of the equation together and so construct a third equal to their sum. 英語の教材で、この箇所の内容が分からずに困っています。 よろしくお願いします。。

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  • bakansky
  • ベストアンサー率48% (3502/7245)
回答No.1

速度の積を含む udu/dx のような記号の存在、つまり方程式の２つの解を足して、その合計に対する３番目の等式を形成することが出来ないということを意味するわけだが、そのような記号の存在がむつかしさのひとつなのだ。

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  2. 学問・教育
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