设函数y=f(x)=sin x ^2+(2a-1)sinx+a ^2+1/4,已知xЕ[5π/6,3π/2],1/3
1个回答
y=(sinx+a-1/2)^2+a
故要取放f(x)max,即a=1,sinx=1/2,即x=5π/6时
f(x)=2
当a=1/3,sinx=1/6时取得最小值放f(X)=1/3
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