dy/dx treated as fraction?
3360
Is $\frac{\textrm{d}y}{\textrm{d}x}$ not a ratio?
157264
Solve $\frac1x+\frac1y=\frac1{pq}$
7474
What am I doing when I separate the variables of a differential equation?
21813
Symbolic derivatives are being calculated numerically
86193
Rigorous proof that $dx dy=r\ dr\ d\theta$
85
Difference between $\Delta$, $d$ and $\delta$
91059
Why is $\frac{d^n}{dx^n}(y(x))$ the notation for the $n$th derivative of $y(x)$, instead of $\frac{d^n}{d^nx}(y(x))$?
73099
Why is $d(x^2)= 2xdx$?
38804
Wrong Wolfram|Alpha limit? $ f(x,y) = \frac {xy}{|x|+|y|} $ for $(x,y)\to(0,0)$
110438
Answer when integrating by partial fractions
142912
Fractions in binary?
49451
What does Pr(dx, dy) mean?
134122
When is differentiating an equation valid?
25913
Is writing $dx^2$ same as writing $d(x^2)$ in calculus
153158
how to get $dx\; dy=r\;dr\;d\theta$
149942
Convert a decimal number to a fraction / rational number
121176
Proper display of fractions