Applying the First Derivative Test In Exercises 19-40, (a) find the critical numbers of f , if any, (b) find the open intervals on which the function is increasing or decreasing, (c) apply the First Derivative Test to identify all relative extrema, and (d) use a graphing utility to confirm your results. f ( x ) = { 2 x + 1 , x ≤ − 1 x 2 − 2 , x > − 1
Applying the First Derivative Test In Exercises 19-40, (a) find the critical numbers of f , if any, (b) find the open intervals on which the function is increasing or decreasing, (c) apply the First Derivative Test to identify all relative extrema, and (d) use a graphing utility to confirm your results. f ( x ) = { 2 x + 1 , x ≤ − 1 x 2 − 2 , x > − 1
Solution Summary: The author explains that the function is differentiable on the complete number line f(x)= leftl2x+1
Applying the First Derivative Test In Exercises 19-40, (a) find the critical numbers of f, if any, (b) find the open intervals on which the function is increasing or decreasing, (c) apply the First Derivative Test to identify all relative extrema, and (d) use a graphing utility to confirm your results.
4. Use the properties of limits to help decide whether each limit exists. If a limit exists, fi
lim (2x²-4x+5)
a)
x-4
b) lim
2
x²-16
x-4x+2x-8
7.
The concentration of a drug in a patient's bloodstream h hours after it was injected is given by
0.17 h
Ah=
h²+2'
Find and interpret lim A(h). Remember, the answers to word problems should always be given in a complete
h→00
sentence, with proper units, in the context of the problem.
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