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Matematica E Simpla • View topic - Cum se calculeaza radicalul?

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 Post subject: Cum se calculeaza radicalul?
PostPosted: Sun Dec 07, 2008 4:55 pm 
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Joined: Sun Dec 07, 2008 4:53 pm
Posts: 2
Enunt:
Cum se afla radicalul dintr-un numar?

De exemplu, cum aflu radicalul din 1566?


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 Post subject: Re: Cum se calculeaza radicalul?
PostPosted: Sun Dec 07, 2008 5:52 pm 
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Joined: Wed Oct 22, 2008 6:27 pm
Posts: 29
Rezolvare:
Exista doua raspunsuri, in functie de ce anume doresti sa faci.

1. Daca doresti sa scoti intregii de sub radical, atunci
- descompui numarul in factori primi
- factorii care sunt la putere para sub radical ies in afara radicalului la jumatate din putere.
Iti recomand site-ul de mai jos pentru a verifica daca ai facut bine descompunerea in factori:
http://www.numberempire.com/numberfactorizer.php

De exemplu : 1566 = 2*3*3*3*29, deci radical din 1566 = 3 * radical din (2 * 3 * 29) = 3 * radical din 174.

2. Daca doresti sa calculezi radicalul, eventual cu zecimale, atunci se aplica algoritmul din manual. Raspunsul nu este atat de simplu, de explicat in cateva cuvinte.


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