Magic triples Let x , y , and z be nonnegative numbers with x + y + z = 200. a. Find the values of x, y , and z that minimize x 2 + y 2 + z 2 . b. Find the values of x , y , and z that minimize x 2 + y 2 + z 2 . c. Find the values of x , y , and z that maximize xyz. d. Find the values of x , y , and z that maximize x 2 y 2 z 2 .
Magic triples Let x , y , and z be nonnegative numbers with x + y + z = 200. a. Find the values of x, y , and z that minimize x 2 + y 2 + z 2 . b. Find the values of x , y , and z that minimize x 2 + y 2 + z 2 . c. Find the values of x , y , and z that maximize xyz. d. Find the values of x , y , and z that maximize x 2 y 2 z 2 .
Solution Summary: The author explains how to find the values of x, y and z that minimize the value of x2+y2.
Use the method of washers to find the volume of the solid that is obtained
when the region between the graphs f(x) = √√2 and g(x) = secx over the
interval ≤x≤ is rotated about the x-axis.
5
Use the method of disks to find the volume of the solid that is obtained
when the region under the curve y = over the interval [4,17] is rotated
about the x-axis.
3. Use the method of washers to find the volume of the solid that is obtained
when the region between the graphs f(x) = √√2 and g(x) = secx over the
interval ≤x≤ is rotated about the x-axis.
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