Question: 2. (a) Prove that there is exactly one solution to the equation IT COST = 7 - 4x. Justify your answer carefully. (b) If f'

2. (a) Prove that there is exactly one solution to the equation IT COST = 7 - 4x. Justify your answer carefully. (b) If f' is continuous on R, f(2) = 0, and f'(2) = 7, evaluate lim f (2 + 3x) + f(2 + 5x)

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