A quick way to do this is by recalling the fact that

, so the largest value that

alone (for any real value of

) can take on is 1.
This means

, and so

.
So the maximum value of this function is 7.
<em>i dont now sorry find someone else
</em>
Depends on the type of AB, is it AB positive or AB negative
<span>AB-positive: 3.4 percent
<span>AB-negative: 0.6 percent
if you need both add the percentages together</span></span>