log10(-100) is:

  1. -2
  2. not defined (no real value)
  3. -100
  4. 2
Answer

B) not defined (no real value)

A positive base raised to any real power is always positive, so the logarithm of a negative number (or zero) is not defined. SLO M-09-A-06 · Knowledge

Mathematics MCQ · More Real Numbers MCQs · Practise