Algebra and Trigonometry 10th Edition

True. $2f(v)=f(v^2)$ Due to the One-to-One Property, if $2f(v)=f(v^2)=f(u)$ we must have that $v^2=u$
Using the Power Property: $2f(v)=2\ln v=\ln v^2=f(v^2)$