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Pertanyaan

Nilai yang memenuhi persamaan: 2 lo g 2 lo g ( 2 x + 1 + 3 ) = 1 + 2 lo g X adalah ....

Nilai yang memenuhi persamaan: adalah ....

  1. log2 over 3

  2. blank squared log space 3

  3. blank squared log space 2

  4. -1 atau 3

  5. 8 atau 1 half

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R. RGFLSATU

Master Teacher

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Pembahasan

blank squared log space squared log left parenthesis 2 to the power of x plus 1 end exponent space plus space 3 right parenthesis space equals space 1 space plus space squared log space X  squared log space squared log left parenthesis 2 to the power of x plus 1 end exponent space plus space 3 right parenthesis space equals space squared space log 2 plus space squared log space X  space squared log left parenthesis 2 to the power of x plus 1 end exponent space plus space 3 right parenthesis equals squared log space 2 X  left parenthesis 2 to the power of x plus 1 end exponent space plus space 3 right parenthesis equals 2 to the power of 2 x end exponent  to the power of a space log space b space plus to the power of a space log space c space equals space to the power of a log left parenthesis b space x space c right parenthesis  a to the power of m plus n end exponent equals a to the power of m x a to the power of n  open parentheses a to the power of m close parentheses to the power of n equals a to the power of m n end exponent  2 to the power of x.2 plus 3 equals left parenthesis 2 to the power of x right parenthesis squared  M i s a l space colon space 2 to the power of x equals y  2 y space plus space y space equals space y squared  y squared minus 2 y minus 3 equals 0  left parenthesis y space minus space 3 right parenthesis left parenthesis y space plus space 1 right parenthesis space equals space 0  y equals 2 to the power of x equals 3 rightwards double arrow x equals squared log 3  y equals 2 to the power of x equals negative 1 space left parenthesis t i d a k space m u n g k i n right parenthesis

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