已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小正周期,单调减区间 (2)若x∈[0,2/π]时,f(x)最小值为-2,求a值
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已知函数f(x)=sin(2x+6/π)+sin(2x-6/π)(a为常数)(1)求函数最小已知函数f(x)=sin(2x+6/π)+sin(2x-6/π)(a为常数)(1)求函数最小正周期,单调减区
已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小正周期,单调减区间 (2)若x∈[0,2/π]时,f(x)最小值为-2,求a值
已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小
已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小正周期,单调减区间 (2)若x∈[0,2/π]时,f(x)最小值为-2,求a值
已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小已知函数f(x)=sin(2x+6/π)+sin(2x-6/π) (a为常数) (1)求函数最小正周期,单调减区间 (2)若x∈[0,2/π]时,f(x)最小值为-2,求a值
f(x)=sin(2x+6/π)+sin(2x-6/π)
=√3/2sin2x+1/2cos2x+√3/2sin2x-1/2cos2x
=√3sin2x
T=2π/2=π
2x在[2kπ+π/2,2kπ+3π/2]是单调递减
x在[kπ+π/4,kπ+3π/4]是单调递减
2)
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