Find absolute maximum and minimum values of the function, if they exist, over the indicated interval. Where no interval is specified, use the real line. List your answers in terms of ordered pairs.
Minimum 0 at x = ?/2
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Provide an appropriate response.Which of the following items is undefined and why?csc-1 
or cos-1 6
What will be an ideal response?
Solve the problem.A steel can in the shape of a right circular cylinder must be designed to hold 500 cubic centimeters of juice (see figure). It can be shown that the total surface area of the can (including the ends) is given by S(r) = 2?r2 + 
, where r is the radius of the can in centimeters. Using the TABLE feature of a graphing utility, find the radius that minimizes the surface area (and thus the cost) of the can. Round to the nearest tenth of a centimeter. 
A. 3.5 cm B. 5.5 cm C. 0 cm D. 4.3 cm
Solve the problem.pH = -log10[H+] Find the [H+] if the pH = 6.4.
A. 3.98 × 10-6 B. 2.51 × 10-6 C. 3.98 × 10-7 D. 2.51 × 10-7
Determine whether the graph is the graph of a function.
A. yes B. no