2

#### PREGUNTA N°2

X2=vector()
Y2=vector()
U=vector()
U1=vector()
U2=vector()
n=1000

for (i in 1:n) {
  U1[i]=runif(1,0,1)
  U2[i]=runif(1,0,1)
  U[i]=runif(1,0,1)
  Y2[i]=(exp((2*U[i])^2)+(exp((1-2*U[i])^2)))/2
  X2[i]=(exp((U1[i]+U2[i])^2)+(exp((U1[i]+U2[i])^2)))/2
}

Antiteticas2=mean(Y2)
Antiteticas2
var(Y2)/n

Diferentes2=mean(X2)
Diferentes2
var(X2)/n