函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是() A.y=1/2(x-1)∧函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是()A.y=1/2(x-1)∧2+2B.y=1/2(x+1)∧2+1/2C.y=1/2(x-1)∧2-3D.y=1/2(x+2)∧2-1

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函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是()A.y=1/2(x-1)∧函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是()A.y=1/2(x-1)∧2+2B

函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是() A.y=1/2(x-1)∧函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是()A.y=1/2(x-1)∧2+2B.y=1/2(x+1)∧2+1/2C.y=1/2(x-1)∧2-3D.y=1/2(x+2)∧2-1
函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是() A.y=1/2(x-1)∧
函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是()
A.y=1/2(x-1)∧2+2
B.y=1/2(x+1)∧2+1/2
C.y=1/2(x-1)∧2-3
D.y=1/2(x+2)∧2-1

函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是() A.y=1/2(x-1)∧函数y=1/2x∧2+2x+1写成y=a(x-h)∧2+k的形式是()A.y=1/2(x-1)∧2+2B.y=1/2(x+1)∧2+1/2C.y=1/2(x-1)∧2-3D.y=1/2(x+2)∧2-1
y=1/2[x^2+4x]+1=1/2[(x+2)^2-4]+1=1/2(x+2)^2-1
选D