Maths-
General
Easy

Question

f colon R to the power of plus not stretchy rightwards arrow R text  defined by  end text f left parenthesis x right parenthesis equals 2 to the power of x comma x element of left parenthesis 0 comma 1 right parenthesis comma f left parenthesis x right parenthesis equals 3 to the power of x comma x element of left square bracket 1 comma straight infinity right parenthesis text  is  end text

  1. onto

  2. one-one

  3. neither one-one nor onto

  4. one nor onto

The correct answer is:

one-one

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