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TentukanHimpunan Penyelesaiannya!

Tentukan Himpunan Penyelesaiannya!

open vertical bar x minus 6 close vertical bar plus open vertical bar x close vertical bar equals 12

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P. Anggrayni

Master Teacher

Jawaban terverifikasi

Jawaban

Himpunan Penyelesaian adalah .

Himpunan Penyelesaian open vertical bar x minus 6 close vertical bar plus open vertical bar x close vertical bar equals 12 adalah open curly brackets negative 3 , 9 close curly brackets.

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Pembahasan

Ingat definisi nilai mutlak. Untuk setiap bilangan real, dibaca nilai mutlak , dan didefinisikan Dengan demikian berdasarkan soal di atas, untuk atau dan berlaku untuk atau dan berlaku Jadi, Himpunan Penyelesaian adalah .

Ingat definisi nilai mutlak. 
Untuk setiap x bilangan real, vertical line x vertical line spacedibaca nilai mutlak x, dan didefinisikan 

open vertical bar x close vertical bar equals open curly brackets table row cell x blank jika    blank x greater or equal than 0 end cell row cell negative x blank jika    blank x less than 0 end cell end table close

Dengan demikian berdasarkan soal di atas, untuk  x minus 6 greater or equal than 0 atau x greater or equal than 6 dan x greater or equal than 0 berlaku

vertical line x minus 6 vertical line plus vertical line x vertical line equals 12 ⟺ x minus 6 plus x equals 12 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ 2 x minus 6 equals 12 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ 2 x equals 12 plus 6 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ 2 x equals 18 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ x equals 18 over 2 equals 9

untuk x minus 6 less than 0 atau x less than 6 dan x less than 0 berlaku

vertical line x minus 6 vertical line plus vertical line x vertical line equals 12 ⟺ negative left parenthesis x minus 6 right parenthesis plus left parenthesis negative x right parenthesis equals 12 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ negative x plus 6 minus x equals 12 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ negative 2 x plus 6 equals 12 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ negative 2 x equals 12 minus 6 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ negative 2 x equals 6 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space ⟺ x equals negative 6 over 2 equals negative 3

Jadi, Himpunan Penyelesaian open vertical bar x minus 6 close vertical bar plus open vertical bar x close vertical bar equals 12 adalah open curly brackets negative 3 , 9 close curly brackets.

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

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