Repositório Institucional da UNIVASF (RIU) :: Navegando por Tipo "Outro"

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Anais da IX Semana Acadêmica de Biologia da Universidade Federal do Vale do São Francisco: : 23 a 26 de agosto de 2021

(Universidade Federal do Vale do São Fancisco, 2021-10-16) Nunes, Vladimir de Sales [et.al]

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Arraial: caderno temático especial sobre Canudos e campesinato

(2026-05-18) Carvalho, Jáder Barrozo de; Ribeiro, Jaciane dos Santos; Milanez, Joanna Lima de Almeida; Sousa, Thiago Batista de; Farias, Uiara Ferreira; Vieira, Denes Dantas; Barros, Edonilce da Rocha

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Com Licença. Pode Entrar... E.1: juntos pelo resgate da história na área da Mina Suçuarana

(2015) Silveira, Anderson; Bezerra, Alvandyr; Kestering, Celito

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Com Licença. Pode Entrar... E.2: desafios da preservação e desenvolvimento com o Projeto Mina Vermelhos

(2017) Silveira, Anderson; Bezerra, Alvandyr; Kestering, Celito

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Cultura e sistemas simbólicos, segundo Joaquim Perfeito da silva

(2014) Kestering, Celito

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Datação Relativa às Pinturas Rupestres da Furna do Caçador (São Gonçalo 21), em Sento Sé - BA

(2014) Kestering, Celito

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Equação Canonica da Elipse

(2026-04-09) Beto, Saavedra

> Playful educational material on the canonical equation of the ellipse, developed to support learning in Analytic Geometry through visual and intuitive explanations.

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Escavando História: São Raimundo Nonato além dos cem anos: PET/Arqueologia UNIVASF

(2013) Kestering, Celito (Org.)

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Geografia da Univasf (2015-2025): uma década de desafios e avanços no semiárido brasileiro

(2025-05-03) Maia Filho, Pedro Paulo Pinto; Souza, Sírius Oliveira

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Geometria Analítica : rotação e translação de eixos coordenados

(2026-04-27) Saavedra, Beto

Rotation and translation of coordinate axes are fundamental techniques in Analytic Geometry used to simplify equations. The equation xy-x+y-3=0 represents a hyperbola. The mixed term (xy) indicates that the curve is not aligned with the original coordinate axes. For this reason, we apply a rotation of the axes by an angle (\theta) in order to eliminate the mixed term and obtain a simpler form of the equation. After the rotation, a translation of the axes may also be performed, shifting the origin to the center of the curve. In this way, the canonical form of the hyperbola is obtained. The change of coordinates makes it possible to: * identify the type of conic; * find the center of the curve; * determine symmetries; * facilitate the calculation of geometric elements such as vertices, foci, and asymptotes. The video allows us to visualize dynamically the harmony between the rotated axes (x_1) and (y_1), the angle (\theta), and the equations representing the hyperbola throughout the geometric transformation.

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Geometria analítica: equações paramétricas do plano

(2026-05-28) Saavedra, Beto

This material presents, in a visual and educational way, the idea of a plane in parametric form in Analytic Geometry. The plane is defined by an initial point (P_0) and by two non-parallel direction vectors, (\vec a) and (\vec b). From the equation (P = P_0 + s\vec a + t\vec b), it is shown that, as the parameters (s) and (t) vary, the points belonging to the plane are generated. Thus, the animation helps students understand how the direction vectors determine the orientation of the plane in space.