Why are we treating du/dx as a fraction?
3360
Is $\frac{\textrm{d}y}{\textrm{d}x}$ not a ratio?
34762
Why isn't $\int \frac{1}{x}~dx = \frac{x^0}{0}$?
133768
How to make sense of fractions?
113345
Why do we set $x^0 = ct$ instead of $x^0 = t$?
25433
Derivation of the general forms of partial fractions
43385
Why is $\frac{\operatorname dy'}{\operatorname dy}$ zero, since $y'$ depends on $y$?
158610
Why is the differentiation of $e^x$ is $e^x$?
135727
Error Measures, why is the sum halved? why not use the absolute value?
110438
Answer when integrating by partial fractions
35794
Why does synthetic division work?
31096
Why does division result in zero instead of a decimal?
885
Why is the 2nd derivative written as $\frac{\mathrm d^2y}{\mathrm dx^2}$?
150417
Two apparently different antiderivatives of $\frac{1}{2 x}$
40241
Understanding the multiplication of fractions
75466
During U-substitution, is the $du$ that we use as the infinitesimal in $\int f(u) \ du$ changing size?
145983
du not accounting for space shown by df
80004
Why is $1/i$ equal to $-i$?