題目 Problem I. Suppose that f(x)f(x)f(x) is a function satisfying ex≤f(x)≤ex+x2,∣x∣<1。e^x\le f(x)\le e^x+x^2,\quad |x|<1。ex≤f(x)≤ex+x2,∣x∣<1。 Find (a) f(0)f(0)f(0). (5%)(5\%)(5%) (b) f′(0)f'(0)f′(0). (10%)(10\%)(10%) 解答