Express 15/(1 - 3x)2 as a power series by differentiating the equation below. what is the radius of convergence?

How many zeros does the function f(x)=4x3-x2+1 have

Can someone me with the property questions for 12 13 and 14 plz

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.