If determine . it gives me (pi5)(7t^6) but i dont think its the right answer
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Originally Posted by wannous If determine . $\displaystyle f(t) = \sqrt{5} \cdot t^{-7}$ $\displaystyle f'(t) = -7\sqrt{5} \cdot t^{-8} = -\frac{7\sqrt{5}}{t^8}$
aww thank i forgot it becomes negative
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