函数y=cos(x+π/3)(x∈【π/6,5π/12】)的最小值是
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函数y=cos(x+π/3)(x∈【π/6,5π/12】)的最小值是
函数y=cos(x+π/3)(x∈【π/6,5π/12】)的最小值是
函数y=cos(x+π/3)(x∈【π/6,5π/12】)的最小值是
x∈[π/6,5π/12]
x+(π/3)∈[π/2,3π/4]
y=cos(x+π/3)∈[-(1/√2),0]
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