抛物线y=x²-根号a x+a²在直线y=2上,求a的值
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抛物线y=x²-根号a x+a²在直线y=2上,求a的值
抛物线y=x²-根号a x+a²在直线y=2上,求a的值
抛物线y=x²-根号a x+a²在直线y=2上,求a的值
y=x²-√ax+a²=(x-√a/2)²+a²-a/4,开口向上,最小值ymin=a²-a/4
抛物线y=x²-根号a x+a²在直线y=2上方
a²-a/4>2
(a-1/8)²>2+1/16=33/16
a-1/8√33/4
a(1+2√33)/8