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Pertanyaan

Diketahui a ⇀ = ( − 4 − 5 ​ ) , b ⇀ = ( 6 2 ​ ) dan c ⇀ = ( 3 − 4 ​ ) . Hitunglah: b. b ⇀ − 2 c ⇀

Diketahui  dan . Hitunglah:

b.  

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A. Salim

Master Teacher

Mahasiswa/Alumni Universitas Pelita Harapan

Jawaban terverifikasi

Jawaban

.

 begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight b with rightwards harpoon with barb upwards on top end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight c with rightwards harpoon with barb upwards on top end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses table row 0 row 10 end table close parentheses end cell end table end style.

Pembahasan

Operasi pengurangan2 vektor secara aljabar: Maka: Jadi, .

Operasi pengurangan 2 vektor secara aljabar:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 2 straight c with rightwards harpoon with barb upwards on top end cell equals cell 2 open parentheses table row 3 row cell negative 4 end cell end table close parentheses end cell row blank equals cell open parentheses table row 6 row cell negative 8 end cell end table close parentheses end cell end table end style 

Maka:

 undefined 

Jadi, begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight b with rightwards harpoon with barb upwards on top end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 2 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell straight c with rightwards harpoon with barb upwards on top end cell end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell open parentheses table row 0 row 10 end table close parentheses end cell end table end style.

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