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| Dear Valeriu: PowerExpand has no effect here--you could replace it by Identity. And replacing it with Expand has the exact opposite effect of what Strad (and its verbose cousin DenestRadicals3) In[491]:= Sqrt[Expand[(Sqrt[3] - Sqrt[2])^2]] ... |
| [Jim Propp][1] once asked: *"Is there a way to relax an approximation to a space-filling curve in continuous time so that it works out its kinks and regresses to simpler approximations? No interim self-intersections please!"* Julian Ziegler Hunts... |
| *NOTE: the notebook with Wolfram Language code is attached at the end of the post* ---------- ![enter image description here][1] It's time to embrace matrix products. They strictly generalize infinite series, products, and continued... |
| *NOTE: All utility functions are defined at the end and also in the attached notebook.* ---------- You can compute the first million digits of $\pi$ without printing them in 0.314149, 0 ![enter image description here][1] and then... |
| Here is a function Julian Ziegler Hunts wrote to evaluate fractal curves at rational points and similarly recursively-defined functions. Usually dragon curves, Hilbert curves, etc. and their inverses. ClearAll[piecewiserecursivefractal]; ... |
| This worked for me in 9.0 in OSX: Select the sections you want in pdf. File/Print Selection/PDF/Open PDF in Preview . --Bill Gosper |