函数y=sinx的值域是―,当x=―时,它有最大值1函数y=cox的最小正周期是―,在区间(0.π)上它是―(用增或减填空)函数函数y=tanx的定义域是―函数y=3sin(2x+ππ/5)的振幅是―,周期是―,

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