Diketahui vektor-vektor a=2i+3j+k, b=3i_2k, dan c=2j_5k. Vektor a+2b_3c=....

a+2b-3c
= (2 3 1) + 2(3 0 -2) - 3(0 2 -5)
= (2 3 1) + (6 0 -4) - (0 6 -15)
= (2+6-0) + (3+0-6) + (1-4+15)
= 8-3+12
= 17