12.07.2015 Views

Sistemi lineari

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EsempioLa soluzione del sistema Ax = b, con⎡0.001 1 −1⎤⎡A = ⎣ 0.7 0.5 10 −4 ⎦ , e b = ⎣1 1 1⎡ ⎤ ⎡ ⎤x 1 1.1119é, in semplice precisione ⎣ x 2⎦= ⎣ 0.4435 ⎦ . Se i calcolix 3 −0.5554vengono eseguiti con due cifre di mantissa il sistema⎡[A, b] = ⎣0.1 · 10 −2 1 −1 10.7 0.5 10 −4 11 1 1 1111⎤⎦⎤⎦ ,

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