Friday, February 8, 2013

Write the solution set of /x-3/>5 in set builder notation

We'll have to solve the double
inequality:


-5>x-3>5


We'll
solve the first, left, inequality and we'll apply the symmetric
formula:


x - 3 <
-5


We'll add 3 both sides:


x
< -5 + 3


x <
-2


x belongs to the interval of values: (-infinite,
-2)


We'll solve the right
inequality:


x - 3 >
5


We'll add 3 both sides:


x
> 5 + 3


x > 8


x
belongs to the interval (8, +infinite).


The
common solution of the system is the empty set since there is no value for x to satisfy
both inequalities at the same time.

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