我家有一条可爱的小狗叫《笨笨》。有一个双休日的星期天,它跟着我去理发。我只要坐下它就“汪汪”地叫了起来,而且越叫越凶,难到它也想理发?于是,我请理发师给它理了几剪刀。没想到刚一剪好,它又对着镜子大叫。原来呀,它不认识镜子中的自己,还以为对方在向它交战呢!
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