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Carlos Ivorra Castillo AN´ALISIS MATEM´ATICO - Tecnologia-Tecnica

Carlos Ivorra Castillo AN´ALISIS MATEM´ATICO - Tecnologia-Tecnica

Carlos Ivorra Castillo AN´ALISIS MATEM´ATICO - Tecnologia-Tecnica

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126 Capítulo 3. Cálculo diferencial de una variable<br />

Entonces, dados y ∈ ]a, b[ ym, n ≥ n0, siy= x se cumple<br />

|Fn(y) − Fm(y)| =<br />

<br />

<br />

<br />

fn(x) − fn(y)<br />

<br />

−<br />

x − y<br />

fm(x)<br />

≤<br />

<br />

− fm(y) <br />

<br />

x − y <br />

<br />

<br />

<br />

1 <br />

<br />

x<br />

− y |fn(x) − fm(x) − fn(y)+fm(y)|<br />

Aplicamos el teorema del valor medio a la función fn − fm en el intervalo<br />

[y, x] (suponemos, por ejemplo, y

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