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Question

If square root of log subscript 2 end subscript invisible function application x end root minus 0.5 equals log subscript 2 end subscript invisible function application square root of x comma then x equals

  1. Odd integer  
  2. Prime number  
  3. Composite number  
  4. Irrational  

The correct answer is: Prime number


    square root of log subscript 2 end subscript invisible function application x end root minus 0.5 equals log subscript 2 end subscript invisible function application square root of x
    rightwards double arrow square root of log subscript 2 end subscript invisible function application x end root minus 0.5 equals 0.5 log subscript 2 end subscript invisible function application x rightwards double arrow y minus 0.5 equals 0.5 y to the power of 2 end exponent rightwards double arrow y to the power of 2 end exponent minus 2 y plus 1 equals 0 rightwards double arrow y equals 1
    rightwards double arrow l o g subscript 2 end subscript x equals 1 rightwards double arrow x equals 2

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