f(x)=-x^2-4x-1=-(x+2)^2+3
对称轴是x=-2
因为-3≤x≤3
所以f(x)的最大值是f(-2)=3,最小值是f(3)=-(3+2)^2+3=-22
故值域是【-22,3】
如果不懂,请Hi我,祝学习愉快!
猜你喜欢
- 1My parents often help me with my homework.改为同义句
- 2静摩擦力产生在两个相对静止的物体之间,滑动摩擦力产生在两个相对运动的物体之间.
- 3在下面横线处各补上一句话.要求:语意连贯,句式一致,形成完整
- 4英语翻译
- 5化学方程式书写是什么时候用单箭头什么时候用等号
- 6The teacher ( )me to have another try
- 7英语改错 “I'm sorry to have kept you to wait for so long”
- 8若2【a-5]-6=3[4a-2],则代数式a的平方-3a+4=?
- 9求翻译!My parents have been most tolerant of whatever mistakes i have done.Sorry for causing too much trouble,PaPa and MaMa
- 10√12一√3/1一√27计算