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Jika x memenuhi pertidaksamaan 8x>4 , maka nilai x  yang memenuhi adalah ....

Pertanyaan

Jika x memenuhi pertidaksamaan begin mathsize 14px style 8 to the power of straight x greater than 4 end style , maka nilai x  yang memenuhi adalah ....

  1. begin mathsize 14px style straight x greater than 1 half end style  

  2. begin mathsize 14px style straight x greater than 2 end style 

  3. begin mathsize 14px style text x>4 end text end style 

  4. begin mathsize 14px style text x> end text 2 over 3 end style 

  5. begin mathsize 14px style straight x greater than 3 over 2 end style 

M. Robo

Master Teacher

Jawaban terverifikasi

Pembahasan

Ingat bahwa jika > 1 , maka berlaku begin mathsize 14px style straight a to the power of straight x greater than straight a to the power of straight y left right double arrow straight x greater than straight y end style .

Perhatikan bahwa

table attributes columnalign right center left columnspacing 0px end attributes row cell 8 to the power of straight x end cell greater than 4 row cell left parenthesis 2 cubed right parenthesis to the power of straight x end cell greater than cell 2 squared end cell row cell 2 to the power of 3 straight x end exponent end cell greater than cell 2 squared end cell end table  

Karena 2 > 1, maka

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 3 straight x end cell greater than cell 2 space end cell row straight x greater than cell 2 over 3 end cell end table end style 

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Himpunan penyelesaian dari pertidaksamaan eksponen 493x−4>7x2 adalah ...

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