Mathematica Questions, Problems & Solutions : TransWikia.com ~ Page 38

Thread a list of replacement rules into a list

I think I am missing something simple, so I apologize in advance... I have two lists {-1 - $epsilon$ + 1/2 $epsilon^2$ x''[0], 1 - $epsilon$ +...

Asked on 08/10/2021 by dpholmes

2 answer

Scidraw suddenly has stopped working

Scidraw has suddenly stopped working for me. I get the error FigCompositeElement::objsyntax: Missing or unexpected arguments in FigCompositeElement[CollectGraphicalElements[FigPolygonElement[{Rectangle @@ Transpose[SciDraw`Private`Window$10373[CanvasRegion[]]]}, Flatten[{Layer -> SciDraw`Private`$FigBackgroundLayer, ShowLine -> False, ShowFill -> True, FillColor...

Asked on 08/10/2021

1 answer

Notation parse rule does parse when it acts as a argument

https://reference.wolfram.com/language/Notation/tutorial/NotationSymbolizeAndInfixNotation.htmlNotation[boxes ⟹ expr] set boxes to be parsed to exprI want a simplified notation for entering a TransferFunctionModel by Notaton.But the Notation rule...

Asked on 08/10/2021 by eason

2 answer

Combinatorial selection with constraints

Five of the 10 actors can only sing, two can only dance, and three can both sing and dance. Now, how many kinds of selection methods are there to perform...

Asked on 08/09/2021

3 answer

Refer to OptionValue externally without a specific function name

I want to refer to the actual option values of a function f outside of f, using OptionValue. Since I would use the same reference in different function f, g,...

Asked on 08/09/2021

1 answer

Solving equation for unknown and replacing it in second equation

I am new to Mathematica and struggling with its syntax.I have a set of equations, which I would like to solve for my unknowns.I would like to...

Asked on 08/09/2021 by Zorg

2 answer

How can I transpose x and y axis on a Plot?

This question has appeared in various forms online, but I have not yet seen a complete answer, so I am posting it here. More specifically, suppose I have a function...

Asked on 08/09/2021 by merlin2011

3 answer

How to make a for loop to automatically make a series of m differential equations?

I'm trying to construct a series of differential equations that defines the behavior of m mutually interacting species according to the Lotka-Volterra equations. I figure there must be some clever...

Asked on 08/09/2021 by phycobilly

1 answer

Find duplicates in list of InfiniteLine

MMA 10 introduced a new function, which can be very convenient: InfiniteLine. Of course, two infinite lines can be described by different arguments: for example InfiniteLine[{{0,0},{1,0}}] and InfiniteLine[{{0,0},{2,0}}] are...

Asked on 08/08/2021

6 answer

Rewrite code to make it faster

I got a problem and have to rewrite the following code and try to make it fast. Does someone have any idea how to solve it?Total@Flatten@MatrixPower[Partition[270^5*Range[270^2],270],12]...

Asked on 08/08/2021 by Hans Peter

1 answer

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