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D ik e t ah u i v e k t or a = mi + 3 j , d an b = mi − 4 j . J ika v e k t or a d an v e k t or b s a l in g t e g ak l u r u s , maka ni l ai m a d a l ah ...

  1. 2 square root of 3 space end root a t a u space minus 2 square root of 3

  2. 2 square root of 3 space end root a t a u space 2 square root of 2

  3. 3 square root of 3 space end root a t a u space minus 4 square root of 3

  4. negative 2 square root of 3

  5. 2 square root of 3

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F. Kurnia

Master Teacher

Mahasiswa/Alumni Universitas Jember

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Pembahasan

K a r e n a space v e k t o r space a with rightwards arrow on top space d a n space v e k t o r space b with rightwards arrow on top space s a l i n g space t e g a k space l u r u s comma space m a k a  a with rightwards arrow on top space times b with rightwards arrow on top space equals 0  left parenthesis m i space plus 3 j space space right parenthesis times left parenthesis m i space minus 4 j space space right parenthesis equals 0  m times m plus 3 times left parenthesis negative 4 right parenthesis equals 0  m squared minus 12 equals 0  m squared equals 12  m equals 2 square root of 3 space a t a u space m equals negative 2 square root of 3

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