11.9. The data in Table P11.3 were collected by a chemical engineer. The response y is filtration time, x1 is temperature, and x2 is pressure. Fit a second-order model.

(a) What operating conditions would you recommend if the objective is to minimize the filtration time?

(b) What operating conditions would you recommend if the objective is to operate the process at a mean filtration rate very close to 46?

Transcribed Image Text:

x %2 y -1 54 -1 1 45 1 -1 32 1 1 47 -1.414 0 50 1.414 0 53 OOOOOOO 0 0 -1.414 47 1.414 51 0 0 41 0 0 39 0 0 44 0 0 42 0 0 40