Timeline for Why is $x + x = 2x$, but $X + X \neq 2X$?
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 19, 2016 at 6:26 | history | edited | Patty | CC BY-SA 3.0 |
added 4 characters in body
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| Sep 19, 2016 at 6:18 | history | answered | Patty | CC BY-SA 3.0 |