学习的快乐是什么?是跟着课本,走进乡下人家,在月明人静的夜里,伴着纺织娘的歌声;走进、的白桦林,感受白桦的挺拔、高洁;“穿梭”时空,生在几千万年前琥珀的故事;品读名家语言,欣赏的猫、勇敢的母鸡和高傲的白鹅……书籍了孤独的心灵,让笔端奏出华丽的乐章,让文字绽放灿烂的花朵,让中华文化源远流长。
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