Jens
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 Apr 14 comment Is there a way to diagonally strike through a character or group of characters in a DisplayForm equation? @ibeatty I added a palette that automates things. Apr 14 revised Is there a way to diagonally strike through a character or group of characters in a DisplayForm equation? Automation added Apr 14 comment Plot a alphabetic character in 2D Yes, that's why you get this. But do you want a smooth curve, or just a way to calculate more points? It's not clear. Apr 14 comment Plot a alphabetic character in 2D Obviously ListPlot can work only if you add more points. Maybe you want this? Apr 14 awarded Enlightened Apr 13 revised Approximating for $a \gg b$ Automation Apr 13 comment Is there a way to use iframes in a notebook? The closest (that I know of) to what you're asking is that you can embed a movie from the web in a Dynamic cell, as I do here in edit 3 of this answer. However, it only works if you have the URL of the actual movie data. Apr 13 awarded Nice Answer Apr 13 comment ToExpression and ToBoxes aren't inverses of each other? @AlexeyPopkov I already upvoted the first version... Apr 13 comment Approximating for $a \gg b$ @Lucas Maybe the edited answer does what you want... Apr 13 revised Approximating for $a \gg b$ Added other expansion method Apr 13 revised Approximating for $a \gg b$ added 373 characters in body Apr 13 comment Approximating for $a \gg b$ @Lucas Whether to call it failure depends on what precisely you consider the small parameter. The info you initially gave is not sufficient to define what you wanted to do with ArcTan, so I picked one of many ways to do it. Apr 13 answered Approximating for $a \gg b$ Apr 13 comment Can you plot pure function without specifying variable? @J.M. Yes - but one person's loss is another person's gain - sometimes the sampling slows plotting down and you end up turning it off anyway... Apr 13 revised Can you plot pure function without specifying variable? typo Apr 13 answered Can you plot pure function without specifying variable? Apr 12 revised Is there a way to diagonally strike through a character or group of characters in a DisplayForm equation? added 120 characters in body Apr 12 answered Is there a way to diagonally strike through a character or group of characters in a DisplayForm equation? Apr 12 comment Is there a way to diagonally strike through a character or group of characters in a DisplayForm equation? For a single character, you can perhaps get by with this: How to use Feynman Slash notation?