Analiza el movimiento del objeto que se representa mediante la gráfica de la Figura 2.21. a. Describe el movimiento del objeto. b. Calcula la aceleración durante los primeros 8 s. c. Calcula ¿cuál es la distancia total recorrida en 12 s? d. Determina ¿cuál es el desplazamiento total al cabo de 2 s? e. Determina ¿cuál es la rapidez media durante el intervalo de 12s?

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19