y=sin [(x-1 )/2] π的单调增区间是

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y=sin [(x-1 )/2] π的单调增区间是

y=sin [(x-1 )/2] π的单调增区间是
y=sin [(x-1 )/2] π的单调增区间是

y=sin [(x-1 )/2] π的单调增区间是
sinx增区间是(2kπ-π/2,2kπ+π/2)
所以2kπ-π/2