How can I replace \infty with +\infty but keep -\infty unchanged?

Question:How can I replace \infty with +\infty but keep -\infty unchanged?

Posted: minhthien2016 395 Product: Maple 2023

9 hours ago

I want to change all `\infty` with `+\infty`. I tried

s := StringTools:-SubstituteAll(s, "\\infty", "+\\infty")

Then, `-\\infty` to `- + \\infty`. How can I replace \infty with +\infty but keep -\infty unchanged?

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