By the time Jacobi left school he had read advanced mathematics texts such as Euler 's Introductio in analysin infinitorum and had been undertaking research on his own attempting to solve quintic equations by radicals .
Ng oras Jacobi kaliwa paaralan niya basahin ang mga advanced na matematika teksto tulad ng Euler 's Introductio sa analysin infinitorum at had been pagsasagawa ng pananaliksik sa kanyang sariling mga pagtatangka upang malutas ang quintic equation sa pamamagitan ng radicals.