If I remember correctly, we use $ Δx$ for changes in $x$ and when $Δx \rightarrow 0$ then $ Δx$ takes the form of $dx$?
Asked
Active
Viewed 135 times
0
-
What is your question? – Dec 16 '14 at 12:54
-
that is the question...is this the said meaning? – Bak1139 Dec 16 '14 at 12:54
-
2I don't see any question here. Please reword the question. – Dec 16 '14 at 12:55
-
I just told you it... – Bak1139 Dec 16 '14 at 12:55
-
The answer is given here: http://math.blogoverflow.com/2014/11/03/more-than-infinitesimal-what-is-dx/ – Thomas Dec 16 '14 at 12:55
-
The notation $dx$ is meant to evoke the idea of $\Delta x$, but it is merely notation for a concept that is related to what happens as $\Delta x\to 0$. In particular, $dx$ is not a number, while $\Delta x$ is a number. – Thomas Andrews Dec 16 '14 at 13:21