Find the value of .

Answer and explanation

Correct answer: C.

  1. Step 1: A negative index means the reciprocal: .
  2. Step 2: .
Answer
.
Why not the others: is what you get if you make the answer negative. is what you get if you ignore the negative sign of the index. is what you get if you make the fraction negative.

Practise more Indices, Logarithms and Surds.

Free questions with an explanation for every one, and full timed GCE O/L Mathematics (Sri Lanka) mock tests.

All Indices, Logarithms and Surds questionsTake a mock test

More Indices, Logarithms and Surds questions

Find the value of 10 -3. | GCE O/L Mathematics (Sri Lanka)