怀素写字
怀素居零陵①时,贫无纸可书②,乃种芭蕉万余株,以③蕉叶供挥洒,名④其庵曰“绿天”。书不足⑤,乃漆一盘书之,又漆一方板,书之再三,盘板皆穿⑥。
注释:①零陵:地名;②书:书写;③以:用;④名:命名;⑤足:足够;⑥穿:穿透
练习书法离不开笔墨纸砚,一贫如洗的怀素是怎么做的?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