Minimization of POS

Question

Please verify my approach for calculation the minimal POS form for a function f.

STEPS:

1. Find out the f' in sum of minterms.
2. Minimize f' and find out minimal SOP form.
3. Using DeMorgan's law, find out f. The calcuated f will be minimal and in SOP form.

Till now, I have been able to solve questions using this approach. However, I need a confirmation whether this method is actually correct and is bound to give me correct results all the time..!

Comments

Careful when Don't care terms are present in your function