Find the critical numbers of the function. f(x) = x5 - 5x Step 1 o or f (x) does not exist. does not exist. To find the critical numbers of f, you must find all x-values for which f (x) Step 2 Begin by differentiating the given function with respect to x and factor completely. f (x) = 5x - Sx(

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A: g'(t)=0⇒t×ddt(14-t)+14-tddt(t)=0⇒t×1214-t×(-1)+14-t=0⇒-t+2(14-t)=0⇒-t+28-2t=0⇒-3t+28=0