How Do Mathematicians Prefer to Notate Integrals with dx?

[jhae2.718]

I also like:$$\int\left(\int\limits_{\stackrel{\int}{a^b}}^{\stackrel{\int f(x)^{\frac{\int}{\iiint^\frac{\rm d}{\oint}}}}{{\rm d}x}}\otimes{\rm d}x \int_b^a\right)x{\rm d}$$