Timeline for What implication arrows, if any, should I require in teaching?
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Feb 14, 2023 at 5:24 | comment | added | ryang |
\begin{align} \leq {}& a^2+2|a| \cdot|b|+b^2 \tag{1} \\ ={}& |a|^2+2|a| \cdot|b|+|b|^2. \tag{2} \end{align} - Neither is fragment $(2)$ replacing fragment $(1);$ the ≤ symbol is not being dropped and subsequently ignored!
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| Feb 13, 2023 at 18:56 | comment | added | ryang | YES. Your observation in paragraph 3 reminds me of an answer that I posted just now postulating why the student misunderstood the working below; the following excerpt was added only subsequent to my initial submission because this perspective genuinely hadn't occured to me prior: | |
| Feb 13, 2023 at 18:38 | history | answered | kaya3 | CC BY-SA 4.0 |