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+;+ 6+38 B+81 6/,32 </./;2+8+ >8=>5 7/81381+= ;>7>< :/;5+63+8
<36+81 .>+ ?/5=9; .+8 B+3=> 7/811>8+5+8 7/=9./ ./=/;738+8
)8=>5 ./=/;738+8 7+=;35< F .+:+= .31>8+5+8 7/=9./ ,/;35>=

– – –
i j k i j
AB = A A A A A
x y z x y
B B B B B
x y z x y
+ + +

F ' ( ) & ) & ' & ( %
%
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& ' # & ( & )
$ % % $ % # # % # $ $ #
Mari Mencari Tahu Kata Kunci
• perkalian titik vektor
+6+7 3<35+ ,+8B+5 598</: B+81 /;+= 5+3=+88B+ ./81+8 :/;5+63+8 ?/5=9; =3=35 • perkalian silang vektor
.+8 <36+81 +;36+2 598</: 598</: 3<35+ +:+ <+4+ B+81 7/7/;6>5+8 :/7+2+7+8 • sudut apit
:/;5+63+8 ?/5=9; • • komutatif
metode determinan
Tes Kompetensi Subbab B
$/( ) ,* & # * + !2)2 * 1'& ,
(/8=>5+8 2+<36 :/;5+63+8 =3=35 +8=+;+ .>+ ?/5=9; <+=>+8 35/=+2>3 ?/5=9; ,/;35>=
' ( ) .+8 ' ( E ) + 5 ' (
3=>816+2 2+<36 :/;5+63+8 <36+81 +8=+;+ .>+ ?/5=9; , 6 ' (
,/;35>= - 7 ' ( )
+ ' ) .+8 ' ( 3=>816+2
, ' ( ) .+8 ' ( ) + 5 5

35/=+2>3 ,>+2 ?/5=9; , 5 6 7
' ( E ) - 5 F 5
! E' E ( ) . 5 6 F 7
" ' E ( E ) +1+37+8+ -+;+ 7/81/=+2>3 ,+2@+ .>+ ,>+2 ?/5=9;
3=>816+2 ,/<+; ?/5=9; / .+8 <>.>= +8=+;+ ?/5=9; ?/5=9; <+6381 =/1+5 6>;>< >8+5+8 :/;5+63+8 <36+81 ?/5=9;
=/;</,>= ./81+8 <>7,> % 435+ / ! E " 3=>81 >8=>5 7/7,>5=35+88B+
4>1+ <>.>= +8=+;+ ?/5=9; .+8 !

Rangkuman

/<+;+8 ?/5=9; +.+6+2 ,/<+;+8 B+81 7/736353 ,/<+; %/84>76+2+8 </63<32 ?/5=9; .+:+= 7/811>8+5+8
.+8 +;+2 98=928B+ 5/-/:+=+8 1+B+ :/;-/:+=+8 7/=9./ 4+4+;1/84+81 :963198 .+8 7/=9./ +8+63<3<
.+8 :/;:38.+2+8 '/,>+2 ?/5=9; .+:+= .3>;+35+8 5/ .+6+7
/<+;+8 <5+6+; +.+6+2 ,/<+;+8 B+81 7/736353 ,/<+; 597:98/88B+ 73<+68B+ .+8 :+.+ ,3.+81
#
$
.+8 =3.+5 ,/;+;+2 98=928B+ :+84+81 <>2> 4+;+5 599;.38+= 5+;=/<3+8 +.+6+2 597:98/8 ?/5=9;
#
.+8 7+<<+ :+.+ <>7,> # .+8 +.+6+2 597:98/8 ?/5=9; :+.+
$
*/5=9; .+:+= .34>76+25+8 .35>;+815+8 .+8 <>7,> $
.35+635+8 ./81+8 ?/5=9; 6+38

Vektor 41