- Let (X,dx) be a metric space and x in X. Show that f: X->R given by f(a)=dX(a,x) is continuous.?

Discover Questions

Expression? What is the chemical formula for road salt? Suppose that A ⊆ B ⊆ V .
(a) Prove that span(A) ⊆ span(B).
(b) Prove that if B is linearly independent then A is linearly independent.? What is (-2/3)^3*(4/5)^2? One race car has greater acceleration than second race car.But the second race car can reach a higher speed than first.How is this possible?