Title | Abstract | File | Date |

Title | Abstract | File | Date |

Some demonstrations on the functions of the second | We will prove the formula that allows to solve a polynomial equation of degree 2 as well as the canonical form of a function of the second degree and some rules of sum and products on the roots. | 2020.04.19.pdf | 2020/04/19 |

Some demonstrations on the sequels | We will prove the explicit forms of the geometrical and arithmetical sequences and prove the formulas of thesums n first squares and cubes. | 2020.03.30.pdf | 2020/03/30 |

Study of the parity of even and odd numbers | We will prove that for any natural integer n, if it is even, then its square is also even. In the same way, we will prove that for any natural whole n, if it is odd, its square is also odd. | 2020.03.21.pdf | 2020/03/21 |