Two stoves are located 42 feet apart, one giving out 4 times as much heat as the other. If you stand at a point on the line between the stoves at a distance x from the less powerful stove, the temperature of the air is given by H(x)=100 + 60 x2 + 240 (42−x)2 . Assume you move back an forth between the two stoves, always at least 4 ft from either stove. (a) Assume you wish to determine the maximum and minimum temperatures you would experience. The domain to study for the function H(X) would be