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f(x)=ab,a=(sin(2x+π/6)+1/2,m),b=(1,-m),
f(x)=sin(2x+π/6)+1/2-m^2
2,当x∈[-π/6,π/3]时,f(x)的最小值是-4
2x+π/6∈[-π/6,5π/6]
当x=-π/6时,f(x)的最小值是-4
f(x)=sin(--π/6)+1/2-m^2= -4
m^2= 4
当x=π/6时,f(x)的最大值= -5/2
f(x)=sin(π/2)+1/2-m^2=1-m^2=-5/2
1年前
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