April 2019 1 12 Report
Diketahui vektor a=xi+3j+k , b=-2i+j+3k , c=2i-3j-4k . Jika a tegak lurus a maka (a-b).2c= .......
a. 6
b. 4
c. 2
d. -2
e. -4
Pakai cara ya, terima kasih
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