题目

So often I hear people justify（为……辩解）their lack of family trips because their children are not old enough to remember them. This reason is so confusing to me. Who would travel based on another person’s memory?Of course the kids aren’t going to remember anything in infancy（婴儿期）, but you will. You will remember all the sweet memories you had with them.My parents would take me to Guatemala as a child. I don’t remember a lot about the trip, but I do know that when I went back as a young adult, I felt comfortable in my surroundings. I didn’t spend my time there disco设函数f（x）=ax3+bx2+cx+d是奇函数，且当时，f（x）取得极小值．（1）求函数f（x）的解析式；（2）求使得方程仅有整数根的所有正实数n的值；（3）设g（x）=|f（x）+（3t-1）x|，（x∈[-1，1]），求g（x）的最大值F（t）．