4. Let X₁, X € Rd, use Continuity Theorem to show that if a X₂ → a¹X, then Xn →a X. The multivariate version of Continui
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4. Let X₁, X € Rd, use Continuity Theorem to show that if a X₂ → a¹X, then Xn →a X. The multivariate version of Continui
4. Let X₁, X € Rd, use Continuity Theorem to show that if a X₂ → a¹X, then Xn →a X. The multivariate version of Continuity theorem says Xn →¿ X if and only if øx, (t) → ox(t) for all t € Rd. Here the characteristic function for X € Rª is defined by ox(t) E(eit™ X). =
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