猜你喜欢
- 1二次函数y=kx2+3x-4的图象与x轴有两个交点,则k的取值范围_.
- 2过正方形ABCD的顶点A作PA⊥面ABCD,若PA=AB=a,求:
- 3若函数y=f(x)的定义域为(1,9)且f(x)=lg(x+1),则函数y=f(x)+f(2x)的值域
- 4This is my classroom.There are fifty-three students in my class.Thirty boys and twenty-three girls.And there are two bla
- 5一物体从高处A点自由落下,经B点到C点.已知B点的速度是C点的四分之三,BC间的距离是7米.求AC的距离?...
- 6原子d和f轨道电子云的伸展方向?
- 7lift your head to the sky cause we will never say
- 8形容气势大的4字成语有_____、_____、_____、_____.
- 9英语翻译
- 10设函数f(x)= 2^ +a\2^x-1 (a为实数)