(1) What is the derivative of the function $f(x)=\frac{1}{x^{6}}$
(A) $\frac{6}{x^{7}}$
(B) $6 x^{5}$
(c) $\frac{-6}{x^{5}}$
(D) $\frac{-6}{x^{7}}$
\( \boxed{\frac{-6}{x^{7}}} \)
Step 1 :Rewrite the function as $f(x)=x^{-6}$
Step 2 :Apply the power rule for differentiation: $f'(x)=-6x^{-7}$
Step 3 :\( \boxed{\frac{-6}{x^{7}}} \)