Jawab:
Penjelasan dengan langkah-langkah:
u= 2i-j
v= 5u+4j-3k
w= 9i-7k
2u-3v+w = 2 (2i-j) - 3 (5u+4j-3k) + (9i-7k)
= (4i-2j) - (15u+12j-9k) + (9i+7k)
= (4i+9i) + (-2j-12j) + (9k+7k) + (-15u)
= 11i - 14j + 16k -15(2i-j)
= 11i - 14j + 16k + (-30i + 15j)
= -19i+j+16k
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Jawab:
Penjelasan dengan langkah-langkah:
u= 2i-j
v= 5u+4j-3k
w= 9i-7k
2u-3v+w = 2 (2i-j) - 3 (5u+4j-3k) + (9i-7k)
= (4i-2j) - (15u+12j-9k) + (9i+7k)
= (4i+9i) + (-2j-12j) + (9k+7k) + (-15u)
= 11i - 14j + 16k -15(2i-j)
= 11i - 14j + 16k + (-30i + 15j)
= -19i+j+16k