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Pertanyaan

Himpunan penyelesaian dari begin mathsize 14px style 3 to the power of 2 x end exponent minus 6.3 to the power of x less than 27 end style adalah ....

  1. {x | x < -3, x ϵ R}

  2. {x | x < -2, x ϵ R}

  3. {x | x < 2, x ϵ R}

  4. {x | x > 2, x ϵ R}

  5. {x | x > 3, x ϵ R}

S. Intan

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Pembahasan

begin mathsize 14px style 3 to the power of 2 straight x end exponent minus 6 straight space. straight space 3 to the power of straight x minus 27 less than 0  Misal space 3 to the power of straight x equals straight a comma space maka  straight a squared minus 6 straight a minus 27 less than 0  open parentheses straight a plus 3 close parentheses open parentheses straight a minus 9 close parentheses less than 0  minus 3 less than straight a less than 9  minus 3 less than straight a  minus 3 less than 3 to the power of straight x space space rightwards arrow space tidak space ada space nilai space straight x space yang space memenuhi    straight a less than 9  3 to the power of straight x less than 9  3 to the power of straight x less than 3 squared  straight x less than 2  Jadi comma space jawaban space yang space tepat space adalah space straight C. end style

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