四三班的亮亮最近迷上了神话故事,一有空就看神话故事书,走路看,吃饭看,甚至晚上偷偷躲在被窝里看,导致视力和学习成绩同步下降。妈妈发现情况不妙,把他的神话故事书都藏了起来,不准他看。亮亮很着急,班上马上就要举行神话故事会了,他还得看书做准备呢!如果你是亮亮,你会怎么说服妈妈允许自己继续阅读神话故事书呢?
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2