Exercitiu cu fractie exponentiala

Holystink · Posted: 06-11-2012, 20:04:25 | Translate post to: ... (Click for more languages)

Salut! Tocmai ce am trecut la ecuatii exponentiale si nu le inteleg deloc ! Ma puteti ajuta va rog cu :
([4x^2]-4)/([3x^2]-4)=>0 va rog daca puteti sa o explicat detaliat

Holystink · Posted: 06-11-2012, 20:55:36 | Translate post to: ... (Click for more languages)

Nimeni?

Zohlomg · Posted: 06-11-2012, 21:45:28 | Translate post to: ... (Click for more languages)

Daca ai o fractie egala cu 0 asta inseamna ca DOAR numaratorul(cel de sus) poate fi egal cu 0.

In cazul tau 4x^2-4 = 0
x^2 = 1 => x= +-1

Sa pui si conditia de existenta 3x^2-4 =/= 0
x^2=/=4/3
x=/=2/r3=/=2r3/3

Holystink · Posted: 06-11-2012, 21:54:33 | Translate post to: ... (Click for more languages)

defapt e mai mare sau egal

Zohlomg · Posted: 06-11-2012, 22:01:12 | Translate post to: ... (Click for more languages)

Holystink · Posted: 06-11-2012, 22:01:56 | Translate post to: ... (Click for more languages)

merci mult

Zohlomg · Posted: 06-11-2012, 22:03:42 | Translate post to: ... (Click for more languages)

Sa pui 2r3/3, am uitat sa pun in poza, e greu in paint. Si iei intervalele un FR arata cu ++.