For each of the functions below, use Karnaugh Maps to obtain both the minimal SOP and POS forms. Draw separate K-maps for the SOP and POS. Find and draw all prime implicants and identify which ones are essential. Give the number of gates and number of literals for your minimal SOP and POS expressions.

1. (9 points) f(x,y,z,w) = m(2,3,5,9,10,11,13,14,15) + D(0,1,4)