Answer
$\frac{1}{7} \cdot \ln{x}$
Work Step by Step
RECALL:
(1) $\sqrt[n]{x} = x^{\frac{1}{n}}$
(2) $\ln{(b^x)}=x$
(3) $\ln{(a^n)} = n \cdot \ln{a}$
Use rule (1) above to obtain
$=\ln{(x^{\frac{1}{7}})}$
Use rule (3) above to obtain:
$=\frac{1}{7} \cdot \ln{x}$
