1 |
x |
1 |
x2 |
A.(x+1)2+2 | B.x2+2 | ||||||||
C.(x+1)2+
| D.(x-
|
1 |
x |
1 |
x2 |
1 |
x |
A.f (x)=
| B.f (x)=log2(-x)(x<0) | ||
C.f (x)=-log2x(x>0) | D.f (x)=-log2(-x)(x<0) |
x |
A.f(x)=x2+2x+1(x≥0) | B.f(x)=x2+2x+1(x≥-1) |
C.f(x)=-x2-2x-1(x≥0) | D.f(x)=-x2-2x-1(x≥-1) |
f(x1)-f(x2) |
x1-x2 |
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