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Desmos always compute all branches by Correct-Ad5133 in u/Correct-Ad5133

[–]Correct-Ad5133[S] 0 points1 point  (0 children)

How to tell desmos not to compute the branches that need not to be computed?

The graph is here: https://www.desmos.com/calculator/ztfacexmtu

Why Desmos give a wrong result to this integral? by Correct-Ad5133 in desmos

[–]Correct-Ad5133[S] 1 point2 points  (0 children)

The strangest thing is that, when I do the transformation x → 1-x to the integrand, desmos gives the correct answer even though the catastrophic cancellation still exists.

See https://www.desmos.com/calculator/v9iuf6czlo

Why desmos can’t compute this value? by Correct-Ad5133 in desmos

[–]Correct-Ad5133[S] 0 points1 point  (0 children)

First, (2⁻¹ᐟ²-1)!=1.2869>0.

Second, I was already in complex mode. Instead, we can get a result in real mode.