Question

Daca x=2 , atunci valoarea lui a=|√3-x|-|√3-2x| este egala cu......
Va implor ma puteti ajuta??

Answer 1

$\sqrt{3} \ \textless \ 2 (1) \\ \sqrt{3} \ \textless \ 4 (2)$

[tex](1)=\ \textgreater \ | \sqrt{3} -x|\ \textless \ 0=\ \textgreater \ | \sqrt{3} -x|=-(\sqrt{3} -x)=x- \sqrt{3} \\ (2)=\ \textgreater \ | \sqrt{3} -2x|\ \textless \ 0=\ \textgreater \ | \sqrt{3} -2x|=-( \sqrt{3} -2x)=2x- \sqrt{3} \\ a=x- \sqrt{3}-(2x- \sqrt{3} )=x- \sqrt{3}-2x+ \sqrt{3}=-x \\ x=2=\ \textgreater \ a=-2[/tex]

Answer 2

a = I √3 -  2 I  - I √3  - 4 I =
           ↓                ↓
 negativ                negativ 
= - ( √3 -2 )  - [ - ( √3 -4 ) ] =      - √3 +  2 + √3  - 4 =  -2