题目

Many people who work in London prefer to live outside it, and to go to their offices or schools every day by train, car or bus, even though this means they have to get up early in the morning and reach home late in the evening. One advantage of living outside London is that houses are cheaper. Even a small flat in London without a garden costs quite a lot to rent. With the same money, one can get a little house in the country with a garden of one’s own. Then, in the country one can rest from the noise and hurry of the town. Even though one has to get up earlier and spend more time in 若，其中.（1）当时，求函数在区间上的最大值；（2）当时，若恒成立，求的取值范围.