Question

Scrieti ca interval multimea: A={x€R|x < (mai mic cu egal) - 7}
urgent va rog ​

Answer 1

Răspuns:

A = { x € R | x ≤ -7}

-∞ -7 +∞

— — — — | — — — — — —

_______)

x € { -∞; -7 }

Answer 2

Răspuns:

$\bf A = \big\{ ~x \in \mathbb{R}~\big| ~x\leq -7~\big\}$

$\bf ~x\leq -7 \implies \purple{\boxed{\bf ~x ~\in~\Big( -\infty ;-7\Big]~}}$

$\bf - \infty \underline{~~~~~~~~~~~~~-7}\Bigg]\underline{~~~~~~~~~}$