If $dx$ is just syntax and not an infinitesimal then why do we apply operations to it?
8408
What is $dx$ in integration?
157673
Why does Intermediate Value Theorem only consider end-points?
153122
A puzzling result of "FullSimplify"
11971
How can I define a math operator behaving like \lim or \sum with limits?
138784
Is the differentiation operator an open mapping?
75466
During U-substitution, is the $du$ that we use as the infinitesimal in $\int f(u) \ du$ changing size?
113345
Why do we set $x^0 = ct$ instead of $x^0 = t$?
33278
$\delta$ differential notation
55657
Behaviour of increment and decrement operators in Python
19212
When do extra parentheses have an effect, other than on operator precedence?
24139
Logical explanation why exponentiation operation is not commutative and associative
31979
Notation: Why write the differential first?
81447
Defined behaviour for expressions
101512
Is there an numeric arithmetic with a single operator?
31635
Overloading Arithmetic Operators in JavaScript?
12547
Is it okay to "ignore" small numbers in limits where $x$ approaches infinity?
148556
Could you explain why $\frac{d}{dx} e^x = e^x$ "intuitively"?