Jawaban 1731130037 Annisa Puspita Rahma Hafidz
Jawaban soal nomor 1
A = 1+2j-4k
B = 21-4j+6k
Perkalian dot :
(1.2i) + (1.(-4j)) + (i.6k) + (2j.2i) + (2j.(-4j)) + (2j.6k) + ((-4k).2i) + ((-4k).(-4j))+((-4k).6k))
= 2+0+0+0+(-8)+0+0+0+(-24)
=2-8-24
=-6-24
= -30
Perkalian silang :
(1x2i) + (1x(-4j)) + (ix6k) + (2jx2i) + (2jx(-4j)) + (2jx6k) + ((-4k)x2i) + ((-4k)x(-4j))+((-4k)x6k))
=0+(-4k)+(-6j)+(-4k)+0+12i+(-8j)+(-16i)+0
=(-4k)+(-6j)+(-4k)+12i+(-8j)+(-16i)
=12i-16i-6j-8j-4k-4k
= -4i-14j-8k
Jawaban soal nomor 2
A = 10i+10j
cA = 2 satuan
A = 10i+10j
A = 1+2j-4k
B = 21-4j+6k
Perkalian dot :
(1.2i) + (1.(-4j)) + (i.6k) + (2j.2i) + (2j.(-4j)) + (2j.6k) + ((-4k).2i) + ((-4k).(-4j))+((-4k).6k))
= 2+0+0+0+(-8)+0+0+0+(-24)
=2-8-24
=-6-24
= -30
Perkalian silang :
(1x2i) + (1x(-4j)) + (ix6k) + (2jx2i) + (2jx(-4j)) + (2jx6k) + ((-4k)x2i) + ((-4k)x(-4j))+((-4k)x6k))
=0+(-4k)+(-6j)+(-4k)+0+12i+(-8j)+(-16i)+0
=(-4k)+(-6j)+(-4k)+12i+(-8j)+(-16i)
=12i-16i-6j-8j-4k-4k
= -4i-14j-8k
Jawaban soal nomor 2
A = 10i+10j
cA = 2 satuan
A = 10i+10j
