2021-009

Find the derivative of $$ f(t) = \frac{1}{t} − \frac{1}{2t^3} + \frac{1}{2t^5} $$.

1. \( f'(t) = \dfrac{1}{t} − \dfrac{1}{2t^3} + \dfrac{1}{2t^5} \)
2. \( f'(t) = {t^2} − {2t^4} + \dfrac{1}{2t^5} \)
3. \( f'(t) = -\dfrac{1}{t^2} + \dfrac{1}{2t^4} + \dfrac{t^5}{2} \)
4. \( f'(t) = {t} - {2t^3} + {2t^5} \)
5. None of the above

Original idea by: André Regino