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- 3函数y=2sin(2x-π/3) x属于[π/3,3π/4] 的值域
- 4数学题若干,能答几题就答几题,(初二)速度~~
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- 9一个正方形,周长24厘米,在正方形里减掉最大的圆,这个圆的面积是正方形的().
- 10希望小学有一间长10米、宽6米高3.5米的教室.这间教室的空间多大现在要在教室的四壁离地面1.2米的范围内贴瓷砖.扣除门窗,和黑板的面积6平方米.这间教室贴瓷砖的面积是多少平方米?