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Pertanyaan

Jika diketahui blank to the power of x l o g left parenthesis 3 x minus 1 right parenthesis left parenthesis to the power of 5 l o g a right parenthesis equals 3, maka x adalah .....

  1. 36

  2. 39

  3. 42

  4. 45

  5. 48

R. RGFLSATU

Master Teacher

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Pembahasan

blank to the power of x l o g left parenthesis 3 x minus 1 right parenthesis left parenthesis to the power of 5 l o g a right parenthesis equals 3  fraction numerator log left parenthesis 3 x minus 1 right parenthesis over denominator log space a end fraction fraction numerator log a over denominator log b end fraction equals 3  fraction numerator log left parenthesis 3 x minus 1 right parenthesis over denominator log 5 end fraction equals 3  log left parenthesis 3 x space minus 1 right parenthesis space equals space 3 log 5  log left parenthesis space 3 x space minus 1 right parenthesis space equals space log space 5 cubed  3 x space minus 1 equals 125  3 x space equals space 126  x space equals space 24

48

5.0 (1 rating)

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