2. Let X1 be the present value random variable of an n-year continuous endowment insurance issued to (x), where the sum insured is 1000 , and let X2 be the present value random variable of an n-year continuous term insurance issued to (x), where the sum insured is 1000 . Calculate Var(X2) and Cov(X1,X2) in terms of Var(X1),E(X2),i, and npx