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Jika 2 lo g p + 4 lo g q 1 ​ = 4 , nilai p 2 q = ...

Jika , nilai  

  1. 1 half     

  2. square root of 2 

  3. 3 over 2 

  4. square root of 3 

  5. 4 

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N. Puspita

Master Teacher

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah B.

jawaban yang tepat adalah B.

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Pembahasan

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Ingat sifat logaritma Sehingga Maka . Selanjutnya Dengan demikian, jawaban yang tepat adalah B.

Ingat sifat logaritma 

table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell space to the power of a log space b plus to the power of a log space c equals to the power of a log space open parentheses b c close parentheses end cell row cell space to the power of a to the power of n end exponent log space b end cell equals cell 1 over n cross times to the power of a log space b to the power of a log space b to the power of n equals n cross times to the power of a log space b end cell end table 

Sehingga 

table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator 1 over denominator space squared log space p plus space to the power of 4 log space q end fraction end cell equals 4 row cell fraction numerator 1 over denominator space squared log space p plus to the power of 2 squared end exponent log space q end fraction end cell equals 4 row cell fraction numerator 1 over denominator space squared log space p plus begin display style 1 half end style cross times squared log space q end fraction end cell equals 4 row cell fraction numerator 1 over denominator space squared log space p plus squared log space q to the power of begin display style 1 half end style end exponent end fraction end cell equals 4 row cell fraction numerator 1 over denominator space squared log space open parentheses p q to the power of begin display style 1 half end style end exponent close parentheses end fraction end cell equals cell 4 squared log space open parentheses p q to the power of 1 half end exponent close parentheses equals 1 fourth squared log space open parentheses p q to the power of 1 half end exponent close parentheses equals squared log space open parentheses 2 to the power of 1 fourth end exponent close parentheses end cell end table 

Maka p q to the power of 1 half end exponent equals 2 to the power of 1 fourth end exponent. Selanjutnya 

table attributes columnalign right center left columnspacing 0px end attributes row cell p q to the power of 1 half end exponent end cell equals cell 2 to the power of 1 fourth end exponent end cell row cell open parentheses p q to the power of 1 half end exponent close parentheses squared end cell equals cell open parentheses 2 to the power of 1 fourth end exponent close parentheses squared end cell row cell p squared q end cell equals cell 2 to the power of 1 half end exponent end cell row cell p squared q end cell equals cell square root of 2 end cell end table 

Dengan demikian, jawaban yang tepat adalah B.

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