Jawaban:
a x b = 95i - 152j - 57k
Penjelasan:
a= 20 i+ 11j+4k
b = 7i +1j +9k
a x b dicari dgn mencari determinan matriks dibawah ini.
i j k
20 11 4
7 1 9
a x b = 99i + 28j + 20k - 77k - 180j -4i
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Jawaban:
a x b = 95i - 152j - 57k
Penjelasan:
a= 20 i+ 11j+4k
b = 7i +1j +9k
a x b dicari dgn mencari determinan matriks dibawah ini.
i j k
20 11 4
7 1 9
a x b = 99i + 28j + 20k - 77k - 180j -4i
a x b = 95i - 152j - 57k