Consider a general quadratic function of two variables: q(x, y) = ax2 + by2 + cxy + dx + ey + f where a – f are constants. using the fundamental definition, show that at every point hx0, y0i such a function is everywhere differentiable

In two or more complete sentences, determine the appropriate model for the given data and explain how you made your decision. (1,-1), (2,0.5), (5,1.5), (8,2)

What is the length and width of a 84.5 square foot rug? will mark

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.