九师联盟 2022-2023学年高三10月质量检测生物X答案

九师联盟 2022-2023学年高三10月质量检测生物X答案，目前答案易对网已经整理了九师联盟 2022-2023学年高三10月质量检测生物X答案的各科答案和试卷，更多联考试卷请关注本网站。

15.(-，-号]因为函数fx)=20221与g(x)=x2-(a 1)x 2-a是区间x∈[1,2]上的“3阶友好函数”，所以f(x)min·g(x)mm≥3在x∈[1,2]上恒成立，又f(x)=2022x-1在x∈[1,2]上单调递增，所以f(x)mim=f(1)=1,所以g(x)=x2-(a十1)x十2-a≥3在x∈[1,2]上恒成立，即a <千1在x[12l恒成立，所以1-红1》31)1=x 1 十13.x 1x 1令x十1=t,t∈[2,3]，设h(t)=t -3,易知h(t)在[2,3]上单调递增，所以h(m=h(2)=2,所以a心-是< p>

Dear Jack,Our school encouraged us to experience some future careers last vacation.Some students choose to work aschoseeither cashiers in a store and waiters at a restaurant.I was one of the 500 student to join in the activity.I decidedorstudentsA be an assistant in a photo studio because of I love taking photos.With the help of a advanced photographer intoanthe studio,I opened my imagination in my daily work.I also developed practically skills which are necessary forpracticalthem to face future challenges.The most important thing I've learned are to improve myselfafterI get mymeiSbefore/untildream job.Yours,Li Hua