题目

阅读理解All through school,I had only one close friend. We spent years together, essentially joined at thehip. But then Greg moved away, and it would take more than 50 years to bring ustogether again.As children, Gregand I dove into everything with passion. We raced our bikes and illustrated ourown comic books. We even became attracted to the same blonde girl from aroundthe corner, a sixth-grader named Joanne who barely knew we existed.The last time I sawGreg was sometime in 1966. I can't recall saying goodbye before he moved.But then, a fewsummers ago, I saw a familiar woman. Excuse me. W已知函数，（1）在区间是增函数还是减函数？并证明你的结论；（2）若当时，恒成立，求整数的最小值。