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$\begingroup$ This is not true in general but often used. Take a linear system: you could introduce an equation that is a combination of the others, in this case nothing changes, or an incompatible equation making the system has no solution anymore. $\endgroup$

JP2
– JP2

2026-02-27 18:23:17 +00:00
Commented yesterday

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Correct minor typos or mistakes
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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>
MathJax equations $\sin^2 \theta$

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