函数y=(4/5)x²-2x-3的单调递减区间是y=(4/5)x²-2x-3是指Y等于五分之四的x²-2x-3次方.
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函数y=(4/5)x²-2x-3的单调递减区间是y=(4/5)x²-2x-3是指Y等于五分之四的x²-2x-3次方.
函数y=(4/5)x²-2x-3的单调递减区间是
y=(4/5)x²-2x-3是指Y等于五分之四的x²-2x-3次方.
函数y=(4/5)x²-2x-3的单调递减区间是y=(4/5)x²-2x-3是指Y等于五分之四的x²-2x-3次方.
设T=x²-2x+3
则y=(4/5)^T
先分析T的单调区间,图象开口向上,对称轴:x=1
当x1时,T递增
根据以上,推出:
当x