a=2i+3j+k
b=-xi+2j+2k
a tegak lurus dengan b
a.b=0
(2,3,1).(-x,2,2)=0
-2x+6+2=0
-2x+8=0
-2x=-8
x=4
jadi nilai x nya 4
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a=2i+3j+k
b=-xi+2j+2k
a tegak lurus dengan b
a.b=0
(2,3,1).(-x,2,2)=0
-2x+6+2=0
-2x+8=0
-2x=-8
x=4
jadi nilai x nya 4