Question

If $x - \frac{1}{x} = y, y-\frac{1}{y} = z, z-\frac{1}{z} = x$, there which of the following equations are true ?
A. $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=0$
B. $\frac{1}{x^2}+\frac{1}{y^2}+\frac{1}{z^2}=8$
C. $\frac{1}{xy}+\frac{1}{yz}+\frac{1}{zx}=-3$
Choose the correct answer from the options given below:

• A. A and B only
• B. A and C only
• C. B and C only
• D. A, B and C only

Answer 1

Answer: (B)

A and C only

Answer 2

The Correct Option is (B) :A and C only