Write E u f and E n f using interval notation E={x|x<8}. F={x|x>_8}

Question

Write using interval notation

Answer 1

E u F is the union.  This is all the elements in the sets combined or joined together.

 

E u F is in the interval (-∞, ∞).

 

 

E n F is the intersection.  It contains all the elements that the two sets have in common.

 

E n F does not exist.  That is because there is no overlapping in the sets, and there is a gap that happens at 8.