求Y=X+1/(3X+2) (X>2/3)的最值是求Y=X+1/(3X-2) (X>2/3)的最值
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求Y=X+1/(3X+2) (X>2/3)的最值是求Y=X+1/(3X-2) (X>2/3)的最值
求Y=X+1/(3X+2) (X>2/3)的最值
是求Y=X+1/(3X-2) (X>2/3)的最值
求Y=X+1/(3X+2) (X>2/3)的最值是求Y=X+1/(3X-2) (X>2/3)的最值
没有最大值
最小值:
令3x-2=t
x=(t+2)/3
y=2/3+t/3+1/t>=2/3+2*(1/3)^(1/2)
无穷大
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