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Diketahui vektor-vektor a = 2 i − 3 j ​ , b = − 4 i − j ​ , dan c = − i + 2 j ​ .Nyatakan setiap vektor berikut ke dalam vektor satuan i dan j ​ dan tentukan besarnya. b. 2 a + b − 3 c

Diketahui vektor-vektor . Nyatakan setiap vektor berikut ke dalam vektor satuan  dan tentukan besarnya.

b.   

  1. undefined 

  2. undefined 

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R. Septa

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

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begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 2 a with rightwards arrow on top plus b with rightwards arrow on top minus 3 c with rightwards arrow on top end cell equals cell 2 open parentheses 2 i with rightwards arrow on top minus 3 j with rightwards arrow on top close parentheses plus open parentheses negative 4 i with rightwards arrow on top minus j with rightwards arrow on top close parentheses minus 3 open parentheses negative i with rightwards arrow on top plus 2 j with rightwards arrow on top close parentheses end cell row blank equals cell open parentheses 4 i with rightwards arrow on top minus 6 j with rightwards arrow on top close parentheses plus open parentheses negative 4 i with rightwards arrow on top minus j with rightwards arrow on top close parentheses minus open parentheses negative 3 i with rightwards arrow on top plus 6 j with rightwards arrow on top close parentheses end cell row blank equals cell 3 i with rightwards arrow on top minus 13 j with rightwards arrow on top end cell end table end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open vertical bar 2 a with rightwards arrow on top plus b with rightwards arrow on top minus 3 c with rightwards arrow on top close vertical bar end cell equals cell square root of 3 squared plus open parentheses negative 13 close parentheses squared end root end cell row blank equals cell square root of 9 plus 169 end root end cell row blank equals cell square root of 178 end cell end table end style 

333

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Diketahui vektor-vektor a = 2 i − 3 j ​ , b = − 4 i − j ​ , dan c = − i + 2 j ​ .Nyatakan setiap vektor berikut ke dalam vektor satuan i dan j ​ dan tentukan besarnya. a. a + b + c

1rb+

4.0

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