Question

Prove that x(logy−logz)y(logz−logx)z(logx−logy)=1?

Answer 1

x(1/y-1/z)y(1/z-1/x)z(1/x-1/y)

x(z-y/yz)y(x-z/zx)z(y-x/xy)

xyz/xyz=1

hence proved