4. Given: f(x)=. Find the critical numbers, the intervals on which f(x) is increasing or decreasing,...

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4. Given: f(x)=. Find the critical numbers, the intervals on which f(x) is increasing or decreasing, +1 and the local extrema. 5. The concentration C(t), in milligrams per cubic centimeter, of a particular drug in a patient's 4. Given: f(x)=. Find the critical numbers, the intervals on which f(x) is increasing or decreasing, +1 and the local extrema. 5. The concentration C(t), in milligrams per cubic centimeter, of a particular drug in a patient's