Does anyone know which program was used for figures in Thomas' calculus book or in Stewart's calculus book? Particularly 3D figures for example in double integrals chapter (for example figure: the volume of the region enclosed by two paraboloids)
Is there any template for the page to look like this:
Thanks in advance.


pgfplots. The page layout resembles a bit what you get with thetufte-bookclass. – Nov 26 '19 at 20:43