Diketahui vektor -vektor a=(-5,-4,-3) b=(1'2'3) c=(-3,8,5). Tentukan : C. | a | - | b |

Question

Matematika Diposting : 2018-01-24 Diupdate : 2021-01-28 miarti278

Pertanyaan

Diketahui vektor -vektor a=(-5,-4,-3) b=(1'2'3) c=(-3,8,5). Tentukan :
C. | a | - | b |

Answer 1

a=(-5,-4,-3) b=(1,2,3) c=(-3,8,5).

|a|= √(-5)²+(-4)²+(-3)² = √25+16+9 =√50 =5√2
|b|= √1²+2²+3² = √1+4+9 =√14

|a|-|b|= 5√2-√14