Mathematics for IGCSE & O level - Indices 2 (Section 4 - No. 2)
What value of *x* satisfies ( x^{-1} = rac{1}{5} )?
5
-5
( rac{1}{5})
0
Paaiškinimas
Because the question states that ( x^{-1} = rac{1}{x} ), and ( rac{1}{x} = rac{1}{5}), then x = 5.