optical problem in curve definition

hawe shared this problem 4 months ago
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Betrifft https://www.geogebra.org/m/qbfqhvyq

In Parameterkurve p wird slider r einmal als Wert und einmal als variable angezeigt.

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Curve argument as vector

Curve argument as x,y coordinate is OK (value representaion)


BTW: the integral arclen_p does not compute in CAS

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Comments (4)

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It looks like this for me. What do you think it should look like?/we4GBzpVyE8JwAAAABJRU5ErkJggg==

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BTW: the integral arclen_p does not compute in CAS

Please upload correct .ggb file, CAS is blank

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the silder r is shown once as r (variable name) and an other hand as 1 (value of r) as marked in pic.

r has the value 1. CAS updated...

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Use NIntegral() for now:

NIntegral((1 / 2 * sqrt((-sin(x) + 2)^2 + (cos(x))^2)),0,pi / 2)

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