Discover Questions

How can something be finite and by the same token have no boundary which means infite? Si dos paracaidistas se lanzan uno despues de otro sin tener en cuenta la resistencia del aire su distancia vertical disminuye? How to expect the range of following without graphing :
Sqrt(1-x^2)? What is the highest unclimbed mountain that is not in Bhutan? Prove that x³+3x+14>0 for x>-2.?