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Jika , maka vektor adalah...

Jika begin mathsize 14px style a with rightwards arrow on top equals i plus 6 j space dan space b with rightwards arrow on top equals 5 i minus j end style, maka vektor begin mathsize 14px style 3 a with rightwards arrow on top plus b with rightwards arrow on top end style adalah...

Jawaban:

Diketahui begin mathsize 14px style a with rightwards arrow on top equals i plus 6 j space dan space b with rightwards arrow on top equals 5 i minus j end style, maka vektor begin mathsize 14px style 3 a with rightwards arrow on top plus b with rightwards arrow on top end style adalah

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 3 a with rightwards arrow on top plus b with rightwards arrow on top end cell equals cell 3 left parenthesis i plus 6 j right parenthesis plus 5 i minus j end cell row blank equals cell 3 i plus 18 j plus 5 i minus j end cell row cell 3 a with rightwards arrow on top plus b with rightwards arrow on top end cell equals cell 8 i plus 17 j end cell end table end style

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