MaplePrimes - Maple 2025 Posts and Questions

Why do the indices on tensor expressions move to different locations?

Hullzie16 — Sat, 20 Jun 2026 00:47:56 Z

The title says it all. Nevertheless, I am doing some symbolic computation/manipulations with tensors in the Physics pacakge. When I type out my expressions and execute it changes some positions of the indices -- example below. Why?
**Sorry, contents will not post.

Download IndexQuestion.mw

How to simplify this radical expression

C_R — Sat, 13 Jun 2026 07:40:12 Z

The below problem has already occured several times to me. In all such instances Maple did not realise that extracting a factor from a square root is the key for further simplification. Doing this by hand is obvious and often easy when extracted factors are positive.

Did I overlook something? Are there other ways avoid disassembling an expression with the op command?
Should simplify or other commands be improved to adress such problems?

How to transform the left-hand side by commands that it matches the right-hand side

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I have tried the usual simplify and combine commands to remove the square root from the numerator.
Extracting a factor for -2 from the square root would probably make further simplification possible but there is no simple command to do so.

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Second approach after "discovering" that content works also on square roots

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Context: The left-hand side in an integrand which was produced by a change of variables in a elliptic integral. Maple simplifies only halfway which makes validation of the result of the variable change difficult.

Related functional programming question: Is a onliner from the above content-primpart construct possible?

Download Simplify_radical_02.mw

Creating a Bar Chart

Elisha — Fri, 12 Jun 2026 12:14:21 Z

Help me rewrite the code to create visible Bar chart of different colors. I can't figure out why this code is not giving me a visible bar graph

Download Bargraph.mw

HTML entities in 2D Input mode

C_R — Sun, 31 May 2026 10:48:32 Z

The HTML characters in the attached document cause problems here on MaplePrimes. You have to open the worksheet

Download HTML_characters_in_math_mode.mw

Explore, and plot involving fsolve

Hullzie16 — Thu, 28 May 2026 20:20:34 Z

I am trying to plot a function where one of the variables is determind via a procedure that uses fsolve and depends on some parameters. When I go to try and make a plot using Explore to vary the parameters I get the following error:
"in fsolve S is in the equation, and is not solved for"
My worksheet is seen below:

restart;

>	T := 2^(2/3)(16CC(S,mu,Z,Pr)^2Pi^2 + 2Pi^2Z^2 + 16PiSCC(S,mu,Z,Pr) + 3S^2)Pr^(1/3)/(4(4CC(S,mu,Z,Pr)Pi + S)^(2/3)(2Pi^2Z^2 + 4PiSCC(S,mu,Z,Pr) + S^2)^(2/3)CC(S,mu,Z,Pr)^(1/3)*Pi^(2/3))

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>	mu = 2^(2/3)S(16C^2Pi^2 - 2Pi^2Z^2 - S^2)Pr^(1/3)/(4(4CPi + S)^(2/3)(2Pi^2Z^2 + 4CPiS + S^2)^(2/3)C^(4/3)Pi^(2/3))

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>	CC:=proc(S,mu,Z,Pr) fsolve((2),C,C=0.01..100) end proc;

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>	CC(1,0,0.5,0.2)

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>	Explore(plot(T,0..15),parameters=[[mu=0 .. 1,minorticks=0.25],[Z=0..0.5,minorticks=0.1],[Pr=0..1,minorticks=0.25]])

When I try to move the sliders on my parameters this is where I get the error. I want to plot over S, but I can only get CC once I have all the other values including S. I assume it has something to do with the fact that my plotting variable is in the procedure?

Any help would be greatly appreciated, thanks.

Download Explore_Plot_Problem.mw

convolution boundaries

JoyDivisionMan — Mon, 06 Apr 2026 17:45:57 Z

Greetings, Friends.

I have a function f(t) which is a density function. It has a [0,2] interval and integrates to unity. I convolve f(t) with itself to get g(t). It has a [0,4] interval and integrates to unity. All is well with that and I understand.

BUT, the boundary of g(t) shouild be on the interval [0,4/sqrt(3)]. This is based upon both my simulation and other analyses.

At present, the area of the g(t) function on the [4/sqrt(3), 4] interval accounts for 1.408701% of the area under the curve. Not a "trivial" nor "throwaway" amount.

Does anyone know of a way to "re-scale" or modify my convolved result g(t) so that all of the resultant area under the curve is on the [0,4/sqrt(3)] interval?

My work is attached.

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Download SphereConvolution.mw