Table VI.

Optimized Quadratic Response Surface Parameters for Eq. 7 Using Four Input Variables Based on the Experimental Data of Table VII

Parameter	Value
b 0	5.935
b 1	−0.220
b 2	−0.321
b 3	−1.170
b 4	−1.231
b 12	0.216
b 13	0.679
b 14	−0.065
b 23	−0.294
b 24	0.051
b 34	0.288
b 44	0.109