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Simona
ho riscontrato un problema su una curva parametrica:
(2cot(t),2sin(t)^2) Versiera
la curva viene tracciata correttamente, ma è impossibile inserirvi un punto.
Se si prova, le coordinate del punto sono al di fuori del reticolo (vicino al punto x=3 si
ottiene (31.79,0.01). Versione GeoGebra 5.0.451
Grazie per le tue risposte.
Ciao, Luigi
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Visto.
Ho provato sia con il comando Punto( ) che con lo strumento.
Sento i capi e ti faccio sapere, grazie.
For the devs - sorry, but I'm in a bit of a rush and can't talk directly:
Placing a point on the graph of (2cot(t),2sin(t)^2) by using the Point tool or command creates a point in (31.79,0.01) that can be moved along the witch (yes, it's an Agnesi witch curve) only to the right of that position.
Try placing a point with the Point tool in x=3: you keep getting (31.79,0.01)
but if you write a = Curve((2cos(t) / sin(t), 2sin(t)²), t, 0, 2π) there is not problem
with a = Curve((2 / tan(t), 2sin(t)²), t, 0, 2π) it works nice also
siempre he pensado que usar cot() es un poco forzado
Thanks, fixed for next release (v452)
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