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Forum Studenti
Sito dedicato agli studenti dei corsi tenuti da Massimo Gobbino and friends (qualunque corso può essere aggiunto)
Inoltre non ho ben capito come hai fatto a calcolare la superficie laterale descritto dalla rotazione dell'archetto di circonferenza. A me viene simile, o meglio viene il doppio di quella tua.. Allego il mio svolgimento! 8) Grazie! invece di calcolare y_g ho calcolato direttamente y_g * l (visto ch...
Inoltre non ho ben capito come hai fatto a calcolare la superficie laterale descritto dalla rotazione dell'archetto di circonferenza. A me viene simile, o meglio viene il doppio di quella tua.. Allego il mio svolgimento!
mi torna tutto con i tuoi risultati tranne la superficie laterale...allego qui lo svolgimento :) Utilizando le polari sferiche e tenendo fisso fi come ha fatto volm a me torna il suo stesso risultato, ho capito il tuo procedimento ma non capisco il motivo del perche non torna con quel procedimento!...
... Ma secondo te, calcolare l'area usando le coordinate polari sferiche, come ho fatto io, perché è sbagliato?... Torna? non dico che sia sbagliato...non ho avuto modo di guardare per bene i conti che hai fatto...mi pareva che con un confronto con guldino il risultato non tornasse...ma può darsi c...
...In allegato lo svolgimento (scusate la pessima scrittura :lol: ) ti sei munito anche tu di tavoletta?...benvenuto nel club...all'inizio non è facile ma con un po' di pratica la scrittura migliora molto...e si crea tanta carta in meno...puoi correggere eventuali errori...inoltre se utilizzi windo...
Per quanto riguarda, invece, la superficie "probabilmente sbagliata" dell'esercizio numero 3 a me viene: \frac{68}{3}\pi In allegato lo svolgimento (scusate la pessima scrittura :lol: ) c'è qualcosa che non mi torna... per il triangolo dovrebbe risultare: y_G = 2/3 visto che si tratta di ...
Buonasera, sicuramente sbaglio io, ma il baricentro del solido generato dalla rotazione intorno a z della figura: 0\leq y \leq 1 0\leq z \leq y^2 a me viene (0,0,\frac {2}{3}) mentre nei risultati vi è scritto (0,0,\frac {1}{3}) . Qualcuno può illuminarmi? Grazie! P.s. Esercizio n5 d...
Buonasera, ho un problema con il seguente integrale: \int_0^1\int_0^1ye^{xy} dxdy Ho iniziato ad integrare rispetto ad y, e dopo un integrale per parti sono arrivato alla seguente forma: \int_0^1\bigl ( \frac {e^x}{x}-\frac {e^x}{x^2}+\frac {1}{x^2}\bigr)dx Il problema è che non riesco ad in...