studiare la superficie razionale rappresentata da x2r 1r 2r e farne qualche caso generalizzazione della quadrica

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Bookshop shipping conditions:

For items priced over €300, it is possible to request an instalment plan from Maremagnum. Payment can be made with Carta del Docente, Carta della cultura giovani e del merito, Public Administration.

Delivery time is estimated according to the shipping time of the bookshop and the courier. In case of customs detention, delivery delays may occur. Any customs duties are charged to the recipient.