Other Math Archive: Questions from March 28, 2022
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1.37 Theorem Suppose x, y, ze R', and a is real. Then (a) x20; (b) x1 = 0 if and only if x = 0; (c) fox - 1ax: (d) x y s xlly; (e) x + y S x1 + lyl: P) |x - 2 = |x - y| + |y - z.1 answer -
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A steel bar AD (see figure) has a cross-sectional area of 260 mm and is loaded by forces P = 12 kN, P = 8 kN, and P, = 6 kN. The lengths of the bar segments are a = 1.5 m, b = 0.6 m, and c = 0.9
Una barra de acero AD (vea la figura) tiene área transversal de 260 mm2 y está cargada por fuerzas P, = 12 KN, P2 = 8 kN y P2 = 6 kN. Las longitudes de los segmentos de la barra son a = 1.5m, b = 0.1 answer -
Exercise 6: Solve the following Laplace equation in the rectangle (0, 1] x [0, 1]: Urz(x, y) + Wyy(x, y) = 0, u(0, y) = f(y), u(1, y) = f(y), (3,0) = 0, wy(2, 1) = 01 answer -
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2.- En un circuito serie de dos elementos simples la tensión y la corriente son (voltios y amperios): Vr = 255 sen (300t +45°) V; i = 8,5 sen (300t + 15') A Determinar dichos elementos.1 answer