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Pertanyaan

Jika .diketahui x > 0 dan x = 1 , maka nilai x yang  memenuhi persamaan blank to the power of x log space left parenthesis x space plus space 12 right parenthesis space minus 3 to the power of x log space 4 space plus space 1 equals space 0 adalah .......

  1. 2

  2. 4

  3. 8

  4. 16

  5. 1 half

R. RGFLSATU

Master Teacher

Jawaban terverifikasi

Pembahasan

x log left parenthesis x space plus space 12 right parenthesis minus space 3 x space log 4 plus 1 space equals space 0 space  x log left parenthesis X space plus space 12 right parenthesis minus space x log space 43 space plus space x log space X space equals space x log space X 0  log space a space minus space log space b space equals space log space a over b  log space a space plus space log space b space equals space log space a b  to the power of x log space fraction numerator x left parenthesis x plus 12 right parenthesis over denominator 4 cubed end fraction equals to the power of x log x to the power of 0  fraction numerator x left parenthesis x plus 12 right parenthesis over denominator 4 cubed end fraction equals X to the power of 0  fraction numerator x left parenthesis x plus 12 right parenthesis over denominator 4 cubed end fraction equals 1  x squared space plus 12 x space equals space 64  x squared space plus space 12 x space minus space 64 space equals space 0  left parenthesis x plus 16 right parenthesis left parenthesis x minus 4 right parenthesis space equals space 0  x space equals space minus 16 comma x space equals space 4

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Jika diketahui x= 1 dan x > 0, maka nilai x yang memenuhi persamaan adalah ......

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