让我们跟着古人走进丰富多彩的诗文世界。有描写景物的佳句,有真挚悠悠的诗情,曹操在《观沧海》中以“水何澹澹 ,①
诗人还常常引花入诗,抒发情感。《江南逢李龟年》中,杜甫通过“正是江南好风景,⑤
古代诗文中往往又蕴含哲思。《〈论语〉十二章》中“⑦

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

