Question 1203832
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Write the radicals as fractional exponents:<br>
{{{f(t)=5t^(1/2)-(1/5)t^(-1/2)}}}<br>
Then finding the derivative involves only the most basic derivative:<br>
{{{f(t)=at^n}}} --> {{{df/dt=nat^(n-1)}}}<br>
If you still have trouble with the problem, re-post showing what work you have tried to do.  (Do NOT respond with a "thank you" note to me -- re-post the whole problem, showing your work.)<br>