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Diketahui , tentukan

Pertanyaan

Diketahui begin mathsize 14px style f open parentheses x close parentheses equals fraction numerator 14 over denominator 5 minus x squared end fraction end style, tentukan begin mathsize 14px style f open parentheses x plus 1 close parentheses equals... end style    

  1. begin mathsize 14px style fraction numerator 14 over denominator x squared minus 2 x plus 4 end fraction end style 

  2. begin mathsize 14px style fraction numerator 14 over denominator x squared minus 2 x minus 4 end fraction end style 

  3. fraction numerator size 14px 14 over denominator size 14px minus size 14px x to the power of size 14px 2 size 14px minus size 14px 2 size 14px x size 14px plus size 14px 4 end fraction 

  4. fraction numerator size 14px minus size 14px 14 over denominator size 14px x to the power of size 14px 2 size 14px minus size 14px 2 size 14px x size 14px plus size 14px 4 end fraction 

  5. begin mathsize 14px style fraction numerator negative 14 over denominator x squared minus 2 x plus 4 end fraction end style 

Pembahasan Soal:

Diketahui begin mathsize 14px style f open parentheses x close parentheses equals fraction numerator 14 over denominator 5 minus x squared end fraction end style, maka begin mathsize 14px style f open parentheses x plus 1 close parentheses end style adalah

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell f open parentheses x close parentheses end cell equals cell fraction numerator 14 over denominator 5 minus x squared end fraction end cell row cell f open parentheses x plus 1 close parentheses end cell equals cell fraction numerator 14 over denominator 5 minus open parentheses x plus 1 close parentheses squared end fraction end cell row cell f open parentheses x plus 1 close parentheses end cell equals cell fraction numerator 14 over denominator 5 minus open parentheses x squared plus 2 x plus 1 close parentheses end fraction end cell row cell f open parentheses x plus 1 close parentheses end cell equals cell fraction numerator 14 over denominator negative x squared minus 2 x plus 4 end fraction end cell end table end style 

Jadi, jawaban yang tepat adalah C.

 

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 15 Maret 2021

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