Chapter 9.3, Problem 37E

To determine

a.

To find:

The value of E prior to cooking and assume $T=0$ for the given condition $E\left(t,T\right)=436.16-10.57t-5.46T-0.02t^2+0.02T^2+0.08Tt$.

To determine

b.

The total change in color of a potato strip that has been cooked for 10 minutes at ${180}^{°}C$ for the given condition $E\left(t,T\right)=436.16-10.57t-5.46T-0.02t^2+0.02T^2+0.08Tt$.

To determine

c.

The critical point and also the maximum, minimum, or saddle point occurs for the given condition $E\left(t,T\right)=436.16-10.57t-5.46T-0.02t^2+0.02T^2+0.08Tt$.