5. Let the temperature T in a body be independent of z so that it is given by a scalar function T = T(x,y). Identify the level curves or the isotherms T(x, y) = constant. Sketch some of them, where T = 36 - 4x2 - 9y2.
5. Let the temperature T in a body be independent of z so that it is given by a scalar function T = T(x,y). Identify the level curves or the isotherms T(x, y) = constant. Sketch some of them, where T = 36 - 4x2 - 9y2.
