Question

am i right??
What is the solution set of {x | x > -5} union {x | x < 5}?

all numbers except -5 and 5
the numbers between -5 and 5
the empty set
all real numbers <<<

Answer 1

yep you're correct :)

Answer 2

@kc_kennylau what about this one??

What is the solution set of {x | x < -5} ∩ {x | x > 5}?


all numbers less than -5 and greater than 5 <<<
the numbers between -5 and 5
the empty set
all real numbers

Answer 3

nope... try to draw it out :)

Answer 4

hmmm.... is it an empty set??? :D

Answer 5

yep :D