Question

daca x∈ [0,2], atunci calculati lx-2l+lx+3l

Answer 1

$x\in[0,\ 2] \Longrightarrow x\ \textless \ 2|_{-2}\Longrightarrow x-2\ \textless \ 0\Longrightarrow |x-2|=-(x-2)=-x+2$    (1)

$x\in[0,\ 2] \Longrightarrow x\ \textgreater \ 0|_{+3}\Longrightarrow x+3\ \textgreater \ 0\Longrightarrow |x+3|=x+3$    (2)

(1), (2) ⇒|x-2| + |x+3| = -x + 2 + x + 3 = 5

Answer 2

11,4 raspuns final ...|x-2| +|x+3|=|0.2-2|+|0,2+3|=|-8.2|+|3.2|=8.2+3.2=11.4