Mathematics for IGCSE & O level - Indices 2 (Section 3 - No. 34)
Which of the following is equivalent to ( ( rac{1}{2})^{-1} )? (Select all that apply)
2
-2
( rac{1}{2})
0.5
คำอธิบาย
A negative exponent indicates the reciprocal. So ( ( rac{1}{2})^{-1} = 2), and 2 is the same as 0.5.