Question 954840
{{{df/dt=(3/2)t^(1/2)=(3/2)sqrt(t)}}}
{{{d2f/dt2=(3/2)(1/2)t^(-1/2)=3/(4sqrt(t))}}}
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{{{df/dt=1-4e^(4t)}}}
{{{d2f/dt2=-16e^(4t)}}}