题目

Dear Chen Hong，Thank you for your email. I'm 【1】 (real) sorry. I can't 【2】 (go) to the book sale with you on Saturday. I'm very busy that day. At 8：00，I have two math 【3】 (class)．You know，it's 【4】 (I) favorite subject. Then at 10：00，I have English. It's difficult but I must learn (学) it 【5】 (good)．At 12：00，I need 【6】 (meet) a friend and have lunch with her. At 2：30，I have 【7】 music lesson. It 【8】 (finish) at 4：00.After that，I want to buy a watch for my brother 【9】 his birthday is coming. Oh，I'm free on Sunday. Is that OK【10（本题满分16分）已知函数 （1）求曲线处的切线方程； （2）求证函数在区间[0，1]上存在唯一的极值点，并用二分法求函数取得极值时相应x的近似值（误差不超过0.2）；（参考数据e≈2.7，≈1.6，e0.3≈1.3） （3）当试求实数的取值范围.