Two spacecraft are following paths in space given by r = (sin(t), t, t) and r2 = (cos(t), 1- t,1). If the temperature for the points is given by T(x, y, z) = x²y(9 – z), use the Chain Rule to determine the rate of change of the difference D in the temperatures the two spacecraft experience at time t = 2. (Use decimal notation. Give your answer to two decimal places.) dD dt Incorrect

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