y=-x^2+2x-1怎么转化成y=a(x-h)^2+k

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y=-x^2+2x-1怎么转化成y=a(x-h)^2+ky=-x^2+2x-1怎么转化成y=a(x-h)^2+ky=-x^2+2x-1怎么转化成y=a(x-h)^2+ky=-x^2+2x-1=-(x^

y=-x^2+2x-1怎么转化成y=a(x-h)^2+k
y=-x^2+2x-1怎么转化成y=a(x-h)^2+k

y=-x^2+2x-1怎么转化成y=a(x-h)^2+k
y=-x^2+2x-1=-(x^2-2x+1)=-(x-1)^2+0
a=-1,h=1,k=0

y=-(x²-2x+1)
=-(x-1)²