<prompt> Acha a,b,c,d ziwe nambari chanya kama hizoanzapmatrix 3 0 0 2 mwishopmatrix anzapmatrix a b c d endpmatrix anzapmatrix a b c d mwishopmatrix anzapmatrix 18 12 -20 -13 mwishopmatrix.Tafuta thamani ndogo iwezekanavyo ya a b c d.  <response>: Kufanya kuzidisha kwa pande zote mbili, tunapataanzapmatrix 3a 3b 2c 2d mwishopmatrix anzapmatrix 18a - 20b 12a - 13b 18c - 20d 12c - 13d mwishopmatrix. Kwa hivyo, 3a 18a - 20b, 12a - 13b 3b, 18c - 20d 2c, na 12c - 13d 2d. Kisha 15a 20b,12a 16b,16c 20d, na 12c 15d. Hizi zinapungua hadi 3a 4b na 4c 5d. Suluhu ndogo kabisa kamili ni a 4, b 3, c 5, na d 4, hivyo thamani ndogo iwezekanavyo ya a b c d ni 4 3 5 4 16. 