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Himpunan penyelesaian daripertidaksamaan adalah ….

Himpunan penyelesaian dari pertidaksamaan begin mathsize 14px style open vertical bar 2 x minus 1 close vertical bar greater than vertical line 4 x plus 3 vertical line end style adalah ….space   

  1. begin mathsize 14px style open curly brackets negative 2 less than x less than negative 1 third close curly brackets end style     undefined 

  2. begin mathsize 14px style open curly brackets 1 third less than x less than 2 close curly brackets end style     undefined 

  3. begin mathsize 14px style open curly brackets negative 2 less than x less than 1 third close curly brackets end style     undefined 

  4. begin mathsize 14px style open curly brackets negative 2 less or equal than x less or equal than 1 third close curly brackets end style      begin mathsize 14px style space end style 

  5. begin mathsize 14px style open curly brackets 1 third less or equal than x less than 2 close curly brackets end style     undefined 

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M. Alfi

Master Teacher

Mahasiswa/Alumni Universitas Negeri Semarang

Jawaban terverifikasi

Jawaban

himpunan penyelesaian dari pertidaksamaan adalah A.

himpunan penyelesaian dari pertidaksamaan begin mathsize 14px style begin bold style vertical line 2 x minus 1 vertical line end style bold greater than bold vertical line bold 4 bold italic x bold plus bold 3 bold vertical line end style adalah A. begin mathsize 14px style begin bold style left curly bracket negative 2 less than x less than negative 1 third right curly bracket end style end style

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Pembahasan

Berdasarkan sifat Kuadratkan kedua ruas Lakukan pemfaktoran Menentukan pembuat nol atau Maka diperoleh interval sebagai berikut Jadi, himpunan penyelesaian dari pertidaksamaan adalah A.

Berdasarkan sifat undefined 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open vertical bar 2 x minus 1 close vertical bar end cell greater than cell vertical line 4 x plus 3 vertical line end cell row cell square root of open parentheses 2 x minus 1 close parentheses squared end root end cell greater than cell square root of open parentheses 4 x plus 3 close parentheses squared end root end cell row blank blank blank end table end style 

Kuadratkan kedua ruas

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses square root of open parentheses 2 x minus 1 close parentheses squared end root close parentheses squared end cell greater than cell open parentheses square root of open parentheses 4 x plus 3 close parentheses squared end root close parentheses squared end cell row cell 4 x squared minus 4 x plus 1 end cell greater than cell 16 x squared plus 24 x plus 9 end cell row cell 4 x squared minus 16 x squared minus 4 x minus 24 x plus 1 minus 9 end cell greater than 0 row cell negative 12 x squared minus 28 x minus 8 end cell greater than 0 row cell 12 x squared plus 28 x plus 8 end cell less than 0 row blank blank blank row blank blank blank row blank blank blank row blank blank blank end table end style 

Lakukan pemfaktoran

begin mathsize 14px style open parentheses 6 x plus 2 close parentheses open parentheses 2 x plus 4 close parentheses less than 0 end style 

Menentukan pembuat nol

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 6 x plus 2 end cell equals 0 row cell 6 x end cell equals cell negative 2 end cell row x equals cell negative 1 third end cell row blank blank blank row blank blank blank end table end style 

atau

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 2 x plus 4 end cell equals 0 row cell 2 x end cell equals cell negative 4 end cell row x equals cell negative 2 end cell end table end style 

Maka diperoleh interval sebagai berikut

begin mathsize 14px style HP equals left curly bracket x vertical line minus 2 less than x less than negative 1 third right curly bracket end style 

Jadi, himpunan penyelesaian dari pertidaksamaan begin mathsize 14px style begin bold style vertical line 2 x minus 1 vertical line end style bold greater than bold vertical line bold 4 bold italic x bold plus bold 3 bold vertical line end style adalah A. begin mathsize 14px style begin bold style left curly bracket negative 2 less than x less than negative 1 third right curly bracket end style end style

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