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Metóda bisekcie (polenie intervalu)<br />

Nájdeme stred intervalu a označíme ho<br />

1<br />

k k<br />

k 1 .<br />

2 k k<br />

Ak f ( x k + 1)<br />

= 0 potom x* = x k + 1 a končíme.<br />

Ak f ( x k + 1)<br />

≠ 0 potom<br />

( a , b )<br />

k+ 1 k+<br />

1<br />

Z konštrukcie ak<br />

1,<br />

bk<br />

1 vyplýva, že f ak+ 1 f bk+ 1 < 0, takže<br />

každý interval k k obsahuje koreň.<br />

( a , b )<br />

x ( a b )<br />

+ = +<br />

( ak xk+ 1) f ( ak) f ( xk+<br />

1)<br />

( x b ) f ( a ) f ( x )<br />

⎧⎪ , , ak < 0,<br />

= ⎨<br />

⎪<br />

⎪<br />

⎪⎩ k+ 1, k , ak k k+<br />

1 > 0.<br />

( + + )<br />

( ) ( )<br />

( a , b )

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