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Menampilkan postingan dari Mei, 2021

PENILAIAN AKHIR SEMESTER GENAP

QUESTIONS  1.  a=i-8j+5k b=3i+8j+2k C=-2i-4j+3k A+2b-3c =  (1,-8, 5) + 2 (3,8,2) - 3 (-2,-4,3)                = (1,-8,5) + (6,16,4) - (-6,-12,9)                = 13i + 20j  2.  (7,-4, p) x (1, 8, -5) = 0              7 + (-32) - 5p = 0                            -25p = 5                                 p = -5 = a - b - c = (7,-4,-5) - (1,-8,-4) - (1,-2,-3) = (5,-10,-3) 3. PQ = Q - P           = (-4, 1) x (9, 11)           = ( -13, -10 ) QUESTIONS 2 4. AB = k × BC B - A = k × C - B (7, -14, 6) - (1, -5, -9) = k  ×    (15, -26, 20) - (7, -14, 6 )                   (6, -9, 15) = k  ×  (...