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Jika . b. Tentukan

Jika begin mathsize 14px style a equals left parenthesis 2 comma space 3 comma space 4 right parenthesis comma space b equals left parenthesis negative 2 comma space 1 comma space 3 right parenthesis space dan space C equals left parenthesis 3 comma space 3 comma space 1 right parenthesis end style.

b. Tentukan begin mathsize 14px style parallel to 2 a plus b parallel to end style 

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 2 a plus b end cell equals cell 2 open parentheses 2 comma space 3 comma space 4 close parentheses plus left parenthesis negative 2 comma space 1 comma space 3 right parenthesis end cell row blank equals cell left parenthesis 4 comma space 6 comma space 8 right parenthesis plus left parenthesis negative 2 comma space 1 comma space 3 right parenthesis end cell row blank equals cell left parenthesis 2 comma space 7 comma space 11 right parenthesis end cell row blank blank blank row cell vertical line 2 a plus b vertical line end cell equals cell square root of 2 squared plus 7 squared plus 11 squared end root end cell row blank equals cell square root of 4 plus 49 plus 121 end root end cell row blank equals cell square root of 174 end cell end table end style

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