1. The problem statement, all variables and given/known data The temperature, T, in ºC, of a yam put into a 200ºC oven is given as a function of time, t, in minutes, by T=a(1-e-kt)+b a. If the yam starts at 20ºC, find a and b. b. If the temperature of the yam is initially increasing at 2ºC per minute, find k. 2. Relevant equations Given in problem. 3. The attempt at a solution I'm not really sure how to set up this problem to do part a. I think if I had a and b I'd be able to do part b with some derivatives and algebra but I just can't figure out how to get there. My instincts are telling me to set T = 20 = a(1-e-kt)+b but I don't know how to approach this from here.