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Diketahui vektor  dan . Nilai dari  adalah ....

Pertanyaan

Diketahui vektor begin mathsize 14px style a with rightwards arrow on top equals open parentheses table row 3 row 2 end table close parentheses end style dan begin mathsize 14px style b with rightwards arrow on top equals open parentheses table row cell negative 1 end cell row 7 end table close parentheses end style. Nilai dari begin mathsize 14px style open vertical bar b with rightwards arrow on top minus a with rightwards arrow on top close vertical bar end style adalah ....

  1. 3

  2. begin mathsize 14px style square root of 29 end style  

  3. begin mathsize 14px style square root of 41 end style  

  4. begin mathsize 14px style square root of 85 end style  

  5. begin mathsize 14px style square root of 97 end style  

A. Acfreelance

Master Teacher

Jawaban terverifikasi

Pembahasan

Perhatikan bahwa

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell b with rightwards arrow on top minus a with rightwards arrow on top end cell equals cell open parentheses table row cell negative 1 end cell row 7 end table close parentheses minus open parentheses table row 3 row 2 end table close parentheses end cell row blank equals cell open parentheses table row cell negative 1 minus 3 end cell row cell 7 minus 2 end cell end table close parentheses end cell row blank equals cell open parentheses table row cell negative 4 end cell row 5 end table close parentheses end cell end table end style

Sehingga

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open vertical bar b with rightwards arrow on top minus a with rightwards arrow on top close vertical bar end cell equals cell square root of open parentheses negative 4 close parentheses squared plus 5 squared end root end cell row blank equals cell square root of 16 plus 25 end root end cell row blank equals cell square root of 41 end cell end table end style  

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