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Garis y−x+12=0 akan memotong parabola y=x2−(b−2)x+13 di dua titik apabila ....

Pertanyaan

Garis begin mathsize 14px style y minus x plus 12 equals 0 end style akan memotong parabola begin mathsize 14px style y equals x squared minus left parenthesis b minus 2 right parenthesis x plus 13 end style di dua titik apabila ....

  1. begin mathsize 14px style x less than negative 9 end style 

  2. size 14px x size 14px greater than size 14px 9 

  3. size 14px x size 14px greater than size 14px 11 

  4. size 14px minus size 14px 9 size 14px less than size 14px x size 14px less than size 14px 11

  5. size 14px x size 14px less than size 14px minus size 14px 9 size 14px space atau undefined

A. Septianingsih

Master Teacher

Mahasiswa/Alumni Universitas Gadjah Mada

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah begin mathsize 14px style x less than negative 7 space atau space x greater than 13 end style (Tidak ada pilihan jawaban yang sesuai)

Pembahasan

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell y subscript 1 end cell equals cell x minus 12 end cell row cell y subscript 2 end cell equals cell x squared minus left parenthesis b minus 2 right parenthesis x plus 13 end cell row cell y subscript 1 end cell equals cell y subscript 2 end cell row cell x minus 12 end cell equals cell x squared minus left parenthesis b minus 2 right parenthesis x plus 13 end cell row 0 equals cell x squared minus open parentheses b minus 2 close parentheses x minus x plus 13 plus 12 end cell row 0 equals cell x squared minus open parentheses b minus 2 minus 1 close parentheses x plus 13 plus 12 end cell row 0 equals cell x squared minus open parentheses b minus 3 close parentheses x plus 13 plus 12 end cell row 0 equals cell x squared plus open parentheses 3 minus b close parentheses x plus 25 end cell row blank blank blank row blank blank blank row cell Memotong space di space dua space titik space apabila space D end cell greater than 0 row D greater than 0 row cell b squared minus 4 a c end cell greater than 0 row cell open parentheses 3 minus b close parentheses squared minus 4 left parenthesis 1 right parenthesis left parenthesis 25 right parenthesis end cell greater than 0 row cell 9 minus 6 b plus b squared minus 100 end cell greater than 0 row cell b squared minus 6 b minus 91 end cell greater than 0 row cell open parentheses b minus 13 close parentheses open parentheses b plus 7 close parentheses end cell greater than 0 row blank blank blank row blank blank blank row blank blank blank end table end style  

 

Daerah penyelesaian :

 

Jadi jawaban yang tepat adalah begin mathsize 14px style x less than negative 7 space atau space x greater than 13 end style (Tidak ada pilihan jawaban yang sesuai)

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