Matematica a 10-a

$enda$peace$ · Posted: 03-10-2010, 13:15:54 | Translate post to: ... (Click for more languages)

lg din 1/2 + lg din 2/3 +lg din 3/2 + lg din 3/4 + lg din 4/5+ lg din 5/6 + lg din 6/7 + lg din 7/8 =????

lg = logaritm zecimal

putin ajutor din partea celor care isi mai amintesc??

10110 00101 01110 01001, 10110 01001 00100 01001, 10110 01001 00011 01001

ion · Posted: 03-10-2010, 14:02:01 | Translate post to: ... (Click for more languages)

= lg1 - lg2 + lg2 - lg3 + lg3 - lg4 + ... + lg6 - lg7 + lg7 - lg8 = lg1 - lg8 = lg1/8

$enda$peace$ · Posted: 03-10-2010, 17:47:35 | Translate post to: ... (Click for more languages)

multumesc frumos ion

10110 00101 01110 01001, 10110 01001 00100 01001, 10110 01001 00011 01001

nFw · Posted: 31-10-2010, 10:05:46 | Translate post to: ... (Click for more languages)

ce frumos vrei sa faci si tu un post exercitiul asta se gaseste pe internet

http://i.imgur.com/cCt1m.png

Zohlomg · Posted: 31-10-2010, 10:40:56 | Translate post to: ... (Click for more languages)

ion.mzk wrote:

= lg1 - lg2 + lg2 - lg3 + lg3 - lg4 + ... + lg6 - lg7 + lg7 - lg8 = lg1 - lg8 = lg1/8

lg 1/8 = lg 1/2^3 = 3 lg 1/2