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1. 2. Realne funkcije realne varijable - FESB

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Neka su k; n 2 N[ f0g i k n; deniramo<br />

binomni koecijent:<br />

n<br />

k<br />

def<br />

=<br />

n!<br />

k! (n k)!<br />

(n povrh k):<br />

Napomena: binomni koecijent je uvijek prirodan<br />

broj, tj<br />

Primjer:<br />

4<br />

0<br />

4<br />

1<br />

4<br />

2<br />

4<br />

3<br />

4<br />

4<br />

=<br />

=<br />

=<br />

=<br />

=<br />

n<br />

k<br />

4!<br />

0! (4 0)! = 4!<br />

2 N:<br />

4! = 1<br />

4!<br />

1! (4 1)! = 4!<br />

3! = 3! 4<br />

3!<br />

= 4<br />

4!<br />

2! (4 2)! = 4!<br />

2! 2! = 2! 3 4<br />

2! 2<br />

4!<br />

3! (4 3)! = 4!<br />

3! 1! = 3! 4<br />

3!<br />

4!<br />

4! (4 4)! = 4!<br />

4! 0! = 1<br />

= 4<br />

= 6

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