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6. SUCCESSIONI E CONVERGENZA UNIFORME 23<br />

che tende a 0 per n → +∞.<br />

(4) Si ha x 2 − x ≤ 1/2 per ogni x ∈ [0, 1], quindi |fn(x)| ≤ 1/2 n → 0 per ogni x ∈ [0, 1] e quindi di ha<br />

convergenza puntuale ed uniforme alla funzione nulla.

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