MaplePrimes - Maple 2022 Posts and Questions

Display region boundary in plot?

Andiguys — Mon, 09 Mar 2026 07:35:12 Z

I have generated the regional plot, but the boundaries between the regions are not clearly marked. How can I highlight the boundaries using a black line or a black dashed line, similar to the example image? What syntax should I use? I have attached my generated image file.

Regional_new.mw

Legend error in multi-curve plot

Andiguys — Wed, 04 Mar 2026 06:21:44 Z

I would like to plot multiple curves in a single graph with proper legends for different values of θ, similar to the sample figure. However, I am encountering an error while generating the legend. What modifications should I make to correct this? Additionally, how can I display labels such as θ=0.4, θ=0.5 etc., directly inside the plot as shown in the sample?

Graph_legend_error.mw

Mistake in solving?

Andiguys — Mon, 02 Mar 2026 10:39:47 Z

When I solve for Pr and q simultaneously using Maple, I obtain a solution that differs from my manual derivation. I suspect there may be an issue with the solve function or the way it is specified. Could anyone please suggest how this can be corrected?
Manually solving q* = (Cv-Cd+Ce*tau-Ci)/(4Cr-t) which is different from maple results.

Sheet:Question_1.mw

Adding text and math below a plot

Andiguys — Tue, 24 Feb 2026 17:09:12 Z

How can I display numerical values alongside a plot as shown in the sample below? What is the syntax?

Q_legend.mw

How to add legend to plots:-inequal?

Andiguys — Fri, 20 Feb 2026 06:56:56 Z

I want to present my regional plot similar to the sample shown, using appropriate legends and labels. What syntax should I use to achieve this? Also, the axis labels need to be clear and bold, as they currently appear faded. What modifications should I make in the syntax?

Q1.mw

SAMPLE:

How to simplify expressions by substitution?

Andiguys — Sun, 01 Feb 2026 16:10:38 Z

I would like to express the decision variables Pn_W,w_W,Ce_W,i1_W,Pn_D,w_D,Ce_D...other variables... in a compact form. Since their analytical expressions are lengthy, I want to identify terms and define appropriate composite parameters to simplify their representation.

Q_shorten_1.mw

For example , Suppose the original expression is: q := ((Cn - a)^2 + (P - d - b)*x^2 + Cn - a - b)/y(Cn - a)^2

Lets say Cn - a =X , P - d - b =S

Then the expression can be rewritten as: q = (X^2 + S*x^2 + X - b)/yX^2