<span>The machine should not be oiled until the recommended time between oilings is up.</span>
Answer:
F(a,b,c,d)=b'c' + a'cd' + ab'd'.
Explanation:
The image of the corresponding k-map is attached to this answer please refer it.By the sop given in the question the k-map is formed.There are 3 groups formed 1 group of four 1's and 2 groups of 2 1's.Hence there are three sop and the sop is reduced from the previous SOP.
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