`h(t) = t^(3/4) - 2t^(1/4)` Find the critical numbers of the function

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Given: `h(t)=t^(3/4)-2t^(1/4)`

Find the critical number(s) by setting the first derivative equal to zero and solving for the x value(s).











The critical numbers are t=0 and t=4/9.

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