Question

Sejam A={ x E R | x> -2} e B= ] -3, 4/3] . Determine:
a) A U B
b)
A intersecção B
c) A - B
d) B-A

Answer 1

.
$A~~----------\circ^{-2}xxxxxxxxxxxxxxxxxxxxx \\ B------\circ^{-3}xxxxxxxxxxxxxxxxxxx\bullet^{ \frac{4}{3} }$

$A\bigcup B=]-3, \frac{4}{3} ] \\ \\ A\bigcap B=]-2, \frac{4}{3} ] \\ \\ A-B=] \frac{4}{3} ,+\infty[ \\ \\ B-C=]-3,-2[$