José Anastácio da Cunha explained

José Anastácio da Cunha (1744 – January 1, 1787) was a Portuguese mathematician. He is best known for his work on the theory of equations, algebraic analysis, plain and spherical trigonometry, analytical geometry, and differential calculus.

References

• Joao Caramalho Domingues . The repercussion of José Anastácio da Cunha in Britain and the USA in the nineteenth century . BSHM Bulletin . 20 . 1 . 2014 . 32–50 . 10.1080/17498430.2013.802111 . 1822/26424 . 54220154 . free .