将y=二分之一x²+2x+1,y=2x²-3x+4 ,y=-2x²+4x-5, y=x²-5x+6化成y=a(x-h)²+k形式
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将y=二分之一x²+2x+1,y=2x²-3x+4 ,y=-2x²+4x-5, y=x²-5x+6化成y=a(x-h)²+k形式
将y=二分之一x²+2x+1,y=2x²-3x+4 ,y=-2x²+4x-5, y=x²-5x+6
化成y=a(x-h)²+k形式
将y=二分之一x²+2x+1,y=2x²-3x+4 ,y=-2x²+4x-5, y=x²-5x+6化成y=a(x-h)²+k形式
y=½x²+2x+1=½(x²+4x+2)=½(x+2)²-1
y=2x²-3x+4=2(x-¾)²+23/8
y=-2x²+4x-5=-2(x-1)²-3
y=x²-5x+6=(x-5/2)²-¼