求出函数y=2sin(2x+π/6)的增区间;当x[0,π]时,y=2sin(2x+π/6)的增区间又是什么
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求出函数y=2sin(2x+π/6)的增区间;当x[0,π]时,y=2sin(2x+π/6)的增区间又是什么
![求出函数y=2sin(2x+π/6)的增区间;当x[0,π]时,y=2sin(2x+π/6)的增区间又是什么](/uploads/image/z/4453599-39-9.jpg?t=%E6%B1%82%E5%87%BA%E5%87%BD%E6%95%B0y%3D2sin%282x%2B%CF%80%2F6%29%E7%9A%84%E5%A2%9E%E5%8C%BA%E9%97%B4%EF%BC%9B%E5%BD%93x%5B0%2C%CF%80%5D%E6%97%B6%2Cy%3D2sin%282x%2B%CF%80%2F6%29%E7%9A%84%E5%A2%9E%E5%8C%BA%E9%97%B4%E5%8F%88%E6%98%AF%E4%BB%80%E4%B9%88)
设 t=2x+π/6,则 x = t/2 - π/12
y=sint 的递增区间是 t∈[2kπ-π/2,2kπ+π/2] (k∈Z)
y=sin(2x+π/6) 的递增区间是 x∈[kπ - π/3,kπ + π/6] (k∈Z)
当 x∈[0,π] 时,y=sin(2x+π/6) 的递增区间是
x∈[-π/3,π/6] ∪[2π/3,7π/6] ∪[0,π] = [0,π/6] ∪[2π/3,π]
y=sint 的递增区间是 t∈[2kπ-π/2,2kπ+π/2] (k∈Z)
y=sin(2x+π/6) 的递增区间是 x∈[kπ - π/3,kπ + π/6] (k∈Z)
当 x∈[0,π] 时,y=sin(2x+π/6) 的递增区间是
x∈[-π/3,π/6] ∪[2π/3,7π/6] ∪[0,π] = [0,π/6] ∪[2π/3,π]
求出函数y=2sin(2x+π/6)的增区间;当x[0,π]时,y=2sin(2x+π/6)的增区间又是什么
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