dT/dt = -k(T – Ta) where T = the temperature of the body (°C), t= time (min), k= the proportionality constant (per minute), and Ta = the ambient temperature (°C). Suppose that a cup of coffee originally has a temperature of 68°C. Use Euler's method to compute the temperature from t= 0 to 10 min using a step size of 1 min if Ta = 21°C and k = 0.1/min.

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