OAU Post-UTME Mathematics 2013 Question 18

Question 18

Logarithms

Simplify logxx4 + log44x

  1. A.4x
  2. B.4/x
  3. C.4 + x
  4. D.4x log4x4x
Show the answer and explanation

Answer: C (4 + x)

Explanation

logxx⁴ = 4 and log44x = x, so the sum is 4 + x.