Harrison siad...

In class on friday I wasn't sure what the symbals for union and intersection were and what they ment. JoJo explained that a U sign ment union which means the lines on your graph don't ever cross because they go in opposite directions. Than he explained that intersection was an n symble. If A={a, b, c, d} And B={a, c, e, f} than the union of the two would be {a, b, c, d, e, f}
the intersect would be {a, c}