10. A storage silo consists of a right circular cylinder with a hemispherical top. If the silo is to have a fixed volume, find the dimensions of the silo of this type of the minimal surface area. (A sphere with radius a has surface area 4πa² and volume .)

9. Find the 'Taylor series expansion for the function at x = 0.

8. The function dt where x has maximum at _________and the minimum value is __________.

10 points for each problem. Solve the problems with the process shown, not just give the answers.