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已知函数\(y = \sin x\)在区间\(\left [ {0,\frac {\pi } {6}} \right ]\),\(\left [ {\frac {\pi } {3},\frac {\pi } {2}} \right ]\)上的平均变化率分别为\({k_1}\),\({k_2}\),那么\({k_1}\),\({k_2}\)的大小关系为___.
参考答案:\({k_1} > {k_2}\)
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