Suppose a second degree polynomial function f(x, y, z)
= x2 + y2 – z2, describes the temperature at a point in 3D
If C is a constant temperature, then the equation f(x, y, z) = C generates the graph
Of a 3D level surface called an isotherm. Three distinct isothermal surfaces are depicted in the figure below. identify which surface represents a temperature below zero, above zero and equal to zero and ×explain each identification using well written English sentences and algebra.