MA 265 Midterm: EGR_265Test1 Spring 2014
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Egr 265, math tools for engineering problem solving. Also, state if they are linear or non-linear. (a) y + y . Find the values of the constant c for which the function y = c equation x. Warning: this de is neither separable nor linear, thus we don"t have a method to systemat- ically nd its solutions. xy + 3y = x2y2. Solve the ivp xy + 2y = x, y(1) = 1. On thanksgiving day you walk into the kitchen and see that your little brother has already taken the turkey out of the oven. On the meat thermometer you see that its current core temperature is 120 f. After 10 minutes the temperature has dropped to 100 f. Here you don"t have to evaluate logarithms, but you have to solve the de. 8 (b) your brother tells you that he took the turkey out 10 minutes before you walked into the kitchen.
