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Jika dan , maka nilai a 2 + a + 1 = ….

Jika Error converting from MathML to accessible text. dan begin mathsize 14px style g to the power of negative sign 1 end exponent open parentheses g to the power of negative sign 1 end exponent left parenthesis 9 right parenthesis close parentheses equals 3 end style, maka nilai  = ….

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begin mathsize 14px style a squared plus a plus 1 equals 3 end style  

Pembahasan

Gunakan sifat invers fungsi berikut ini : maka Tambahkan 3 di kedua ruas maka diperoleh: Atau dengan cara biasa, yaitu: Maka: (kedua ruas di tambah dengan 3) Sehingga:

Gunakan sifat invers fungsi berikut ini :

 begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell straight g to the power of negative 1 end exponent left parenthesis straight x right parenthesis end cell equals straight y row straight x equals cell straight g left parenthesis straight y right parenthesis end cell end table end style  

maka

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell straight g to the power of negative 1 end exponent left parenthesis straight g to the power of negative 1 end exponent left parenthesis 9 right parenthesis right parenthesis end cell equals 3 row blank blank blank row cell straight g to the power of negative 1 end exponent left parenthesis 9 right parenthesis end cell equals cell straight g left parenthesis 3 right parenthesis end cell row cell straight g to the power of negative 1 end exponent left parenthesis 9 right parenthesis end cell equals cell 3 straight a plus 3 end cell row blank blank blank row 9 equals cell straight g left parenthesis 3 straight a plus 3 right parenthesis end cell row 9 equals cell straight a left parenthesis 3 straight a plus 3 right parenthesis plus 3 end cell row 0 equals cell 3 straight a squared plus 3 straight a minus 6 end cell row 0 equals cell 3 left parenthesis straight a squared plus straight a minus 2 right parenthesis end cell row 0 equals cell straight a squared plus straight a minus 2 end cell end table end style   
 

Tambahkan 3 di kedua ruas maka diperoleh:

begin mathsize 14px style 0 plus 3 equals a squared plus a minus sign 2 plus 3 3 equals a squared plus a plus 1 end style 
 

Atau dengan cara biasa, yaitu:

Error converting from MathML to accessible text.  
 

Maka:

begin mathsize 14px style g to the power of negative sign 1 end exponent open parentheses g to the power of negative sign 1 end exponent open parentheses 9 close parentheses close parentheses equals 3 g to the power of negative sign 1 end exponent open parentheses 9 close parentheses equals fraction numerator 9 minus sign 3 over denominator a end fraction equals 6 over a g to the power of negative sign 1 end exponent open parentheses 6 over a close parentheses equals fraction numerator open parentheses 6 over a minus sign 3 close parentheses over denominator a end fraction fraction numerator open parentheses 6 over a minus sign 3 close parentheses over denominator a end fraction equals 3 open parentheses 6 over a minus sign 3 equals 3 a close parentheses point a 6 minus sign 3 a equals 3 a squared open parentheses 3 a squared plus 3 a minus sign 6 equals 0 close parentheses division sign 3 a squared plus a minus sign 2 equals 0 end style    

Error converting from MathML to accessible text. (kedua ruas di tambah dengan 3)

Sehingga: begin mathsize 14px style a squared plus a plus 1 equals 3 end style  

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